Underground – Page 6

Burying Bits of the City: Hong Kong Underground

Several months ago we looked at a network of artificial caves being built beneath Singapore that will, upon completion, extend the city’s energy infrastructure under the Pacific seabed; and, back in 2010, we took a very brief look at huge excavations underneath Chicago, courtesy of a feature article in Tunnel Business Magazine.

Now, according to the South China Morning Post, civil engineers in Hong Kong are exploring the possibility of developing large-scale underground spaces—artificial caves—for incorporation into the city’s existing infrastructure. In the full text of the article, available online courtesy of Karst Worlds, we read that the Hong Kong government “is moving towards burying bits of the city—the unsightly ones—in underground caverns, freeing up more land for housing and economic development.”

[Image: From the Enhanced Use of Underground Space in Hong Kong].

This is part of a larger undertaking called the Enhanced Use of Underground Space in Hong Kong initiative, a study, backed by Arup, that “would give the government a basis for policy guidelines to encourage cavern developments for both public and private sectors.” Private-sector caverns beneath the city!

[Image: From the Enhanced Use of Underground Space in Hong Kong; view bigger].

Specifically, city engineers “will begin by identifying suitable rock caverns to house 400 government facilities that can be relocated, notably the not-in-my-backyard utilities disliked by nearby residents.” These include “sewage treatment plants, fuel storage depots, refuse transfer stations and columbariums.” The University of Hong Kong, for instance, recently “hid a saltwater reservoir in an artificial cavern next to its Centenary Campus, in a project that cost HK$500 million”; these are referred to as “water caverns.”

Inspired by the fact that “caverns have been used as wine cellars, data centres and car parks in Finland and other countries,” Hong Kong’s Secretary of Development, Carrie Lam, has “called Hong Kong’s rock formations a ‘unique geological asset‘ and urged the city to take caverns into consideration.”

[Image: From the Guide to Cavern Engineering].

The awesome scale of some of the proposed excavations can be seen in this animation, where, at roughly the one-minute mark, we dive underground and begin to fly through linked 3D models of future freshwater reservoirs. A related PDF outlines a new landscape category—the Strategic Cavern Area—wherein “a strategic area is defined as being greater than 20 hectares in area and having the ability to accommodate multiple cavern sites.” (The idea that your neighborhood might be declared a Strategic Cavern Area, and thus cleared of its building stock, brings to mind a student project featured on BLDGBLOG last month, the “Lower East Side Quarry” by Rebecca Fode).

[Images: From the Guide to Cavern Engineering].

Sadly, we missed an opportunity to participate in a Hong Kong-based cave-design contest—its deadline was September 2011—called the “Rock Caverns—Unlimited Creativity” competition: “Competition entrants are required, with their unlimited creativity, to propose ideas related to the potential usage of underground space in Hong Kong.” A detailed design guide, called the Geoguide or Guide to Cavern Engineering, was published, and it remains available in full online.

This booklet is nothing less than a builder’s guide to artificial caves. As Chapter 4 helpfully explains, for instance, “In common with other complex constructions, the design of a large underground space is an iterative process where a series of factors influence the final result,” with prospective cave-designers required to use “numerous iterative loops” to create “a cost-effective cavern installation.” The rest of that chapter goes on to explore cavern cross-sections, layout, shape, rock bolts and pattern bolting, and even intra-cave pillars, all of which should find their way into an architecture school design studio somewhere soon.

[Image: From the Guide to Cavern Engineering].

In any case, while I feel compelled to point out the obvious—that a high-tech labyrinth of artificial caves dug beneath the rocky hills of an over-urbanized tropical archipelago is an incredible setting for future films, novels, and computer games—I should also mention, more prosaically, that Hong Kong’s impending subterranean expansion will doubtless offer many lessons relevant to cities elsewhere, as public-private underground partnerships increase in both number and frequency, with space-starved global mega-cities turning to partial self-burial as a volumetric infrastructural solution to the lack of available surface area.

Speleological Superparks

[Image: Downtown Reno on a Saturday night with people queuing up to climb the BaseCamp wall; photo by BLDGBLOG].

As part of an overall strategy to rebrand itself not as a city of gambling and slot machines—not another Las Vegas—but as more of a gateway to outdoor sports and adventure tourism—a kind of second Boulder or new Moab—Reno, Nevada, now houses the world’s largest climbing wall, called BaseCamp, attached to the side of an old hotel.

[Image: The wall; photo by BLDGBLOG].

BaseCamp is “a 164-foot climbing wall, 40 feet taller than the previous world’s highest in the Netherlands,” according to DPM Climbing. “The bouldering area will also be world-class with 2900 square feet of overhanging bouldering surface.”

You can see a few pictures of those artificial boulders over at DPM.

[Image: The wall; photo by BLDGBLOG].

Fascinatingly, though, the same company who designed and manufactured this installation—a firm called Entre Prises—also makes artificial caves.

One such cave, in particular, created for and donated to the British Caving Association, is currently being used “to promote caving at shows and events around the country. It is now housed in its own convenient trailer and is available for use by Member Clubs and organizations.”

[Image: The British Caving Association’s artificial cave, designed by Entre Prises; photo by David Cooke].

These replicant geological forms are modular, easily assembled, and come in indoor and outdoor varieties. Indoor artificial caves, we read, “are usually made from polyester resin and glass fibre as spraying concrete indoors is often not very practicable. Indoor caves provide the experience of caving without some of the discomforts of natural or outdoor caves: the air temperature can be relatively easily controlled, in most cases specialist clothing is not required [and] the passage walls are not very thick so more cave passage can be designed to go into a small area.”

Further, maintaining the exclamation point from the original text: “The modular nature of the Speleo System makes it possible to create any cave type and can be modified in minutes by simply unbolting and rotating a section! This means you can have hundreds of possible caving challenges and configurations for the price of one.”

It would be interesting to live in a city, at least for a few weeks, ruled by an insane urban zoning board who require all new buildings—both residential and commercial—to include elaborate artificial caves. Not elevator shafts or emergency fire exits or public playgrounds: huge fake caves torquing around and coiling through the metropolis. Caves that can be joined across property lines; caves that snake underneath and around buildings; caves that arch across corporate business lobbies in fern-like sprays of connected chambers. Plug-in caves that tour the city in the back of delivery trucks, waiting to be bolted onto existing networks elsewhere. From Instant City to Instant Cave. Elevator-car caves that arrive on your floor when you need them. Caves on hovercrafts and helicopters, detached from the very earth they attempt to represent.

This brings to mind the work of Carsten Höller, implying a project someday in which the Turbine Hall in London’s Tate Modern could be transformed into the world’s largest artificial cave system, or perhaps even a future speleo-superpark in a place like Dubai, where literally acres of tunnels sprawl across the landscape, inside and outside, aboveground and below ground, in unpredictably claustrophobic rearrangeable prefab whorls.

The “outdoor” varieties, meanwhile, are actually able “to be buried within a hillside”; however, they “must be able to withstand the bearing pressure of any overlying material, eg. soil or snow. This is usually addressed by making the caving structures in sprayed concrete that has been specifically engineered to withstand the loads. Alternatively the cave passages can be constructed in polyester resin and glass fibre but then they have to be within a structural ‘box’ if soil pressure is to be applied.”

In any case, here are some of the cave modules offered by Entre Prises, a kind of cave catalog called the Speleo System—though it’s worth noting, as well, that “To add interest within passages and chambers, cave paintings and fossils can be added. This allows for user interest to be maintained, creating an educational experience.”

[Image: The Speleo System by Entre Prises].

As it happens, Entre Prises is also in the field of ice architecture. That is, they design and build large, artificially maintained ice-climbing walls.

These “artificial ice climbing structures… support natural ice where the air temperature is below freezing point.” However, “permanent indoor structures,” given “a temperature controlled environment,” can also be created. These are described as “self generating real ice structures that utilize a liquid nitrogen refrigeration system.”

[Images: An artificial ice structure by Entre Prises for the Winter X Games].

Amongst many things, what interests me here is the idea that niche sports enthusiasts—specifically cavers and climbers—have discovered and, perhaps more importantly, financially support a unique type of architecture and the construction techniques required for assembling it that, in an everyday urban context, would appear quite eccentric, if not even avant-garde.

Replicant geological formations in the form of modular, aboveground caves and artificially frozen concrete towers only make architectural and financial sense when coupled with the needs of particular recreational activities. These recreational activities are more like spatial incubators, both inspiring and demanding new, historically unexpected architectural forms.

So we might say that, while architects are busy trying to reimagine traditional building typologies and architectural programs—such as the Library, the Opera House, the Airport, the Private House—these sorts of formally original, though sometimes aesthetically kitsch, designs that we are examining here come not from an architecture firm at all, or from a particular school or department, but from a recreational sports firm pioneering brand new spatial environments.

As such, it would be fascinating to see Entre Prises lead a one-off design studio somewhere, making artificial caves a respectable design typology for students to admit they’re interested in, while simultaneously pushing sports designers to see their work in more architectural terms and prodding architects to see niche athletes as something of an overlooked future clientele.

Brooklyn Vent

[Image: Disguised infrastructure; photo by BLDGBLOG].

In the novel Foucault’s Pendulum, two characters discuss a house that is not what it appears to be. People “walk by” this house in Paris, we read, but “they don’t know the truth. That the house is a fake. It’s a facade, an enclosure with no room, no interior. It is really a chimney, a ventilation flue that serves to release the vapors of the regional Métro. And once you know this you feel you are standing at the mouth of the underworld…”

[Image: The door to the underworld; photo by BLDGBLOG].

Two days ago, Nicola Twilley and I went on an early evening expedition over to visit the house at 58 Joralemon Street in Brooklyn, with its blacked out windows and its unresponsive front door.

This “house” is actually “the world’s only Greek Revival subway ventilator.” It is also a disguised emergency exit for the New York City subway.

[Image: Disguised infrastructure; photo by BLDGBLOG].

According to a blog called the Willowtown Association, “the ventilator was a private brownstone dating from 1847. The substation was built in 1908 in conjunction with the start of subway service to Brooklyn. As reported in the BKLYN magazine article, the building’s ‘cavernous interior once housed a battery of electrical devices that converted alternating current to the 600-volt direct current needed to power the IRT.'”

[Image: A view through the front door of 58 Joralemon Street; photo by BLDGBLOG].

It is New York’s more interesting version of 23/24 Leinster Gardens in London. As the Brooklyn Daily Eagle wrote last year, “the exit disguised as a brownstone leads to a grimy-lit set of metal stairs that ascend past utility boxes and ventilation shafts into a windowless room with a door. If you opened the door, you would find yourself on a stoop, which is just part of the façade.”

[Image: Photo by BLDGBLOG].

You’ll notice on Google Maps that the 4/5 subway line passes directly beneath the house, which brings to mind an old post here on BLDGBLOG in which we looked at the possibility that repurposed subway cars could be used someday as extra, rentable basement space—that is, “temporary basements in the form of repurposed subway cars,” with the effect that “each private residence thus becomes something like a subway station, with direct access, behind a locked door, to the subterranean infrastructure of the city far below.”

Then, for a substantial fee—as much as $15,000 a month—you can rent a radically redesigned subway car, complete with closets, shelves, and in-floor storage cubes. The whole thing is parked beneath your house and braked in place; it has electricity and climate control, perhaps even WiFi. You can store summer clothes, golf equipment, tool boxes, children’s toys, and winter ski gear.
When you no longer need it, or can’t pay your bills, you simply take everything out of it and the subway car is returned to the local depot.
A veritable labyrinth of moving rooms soon takes shape beneath the city.

Perhaps Joralemon Street is where this unlikely business model could be first tried out…

In any case, Nicola and I walked over to see the house for a variety of reasons, including the fact that the disguised-entrance-to-the-underworld is undoubtedly one of the coolest building programs imaginable, and would make an amazing premise for an intensive design studio; but also because the surface vent structures through which underground currents of air are controlled have always fascinated me.

These vents appear throughout New York City, as it happens—although Joralemon, I believe, is the only fake house—serving as surface articulations of the larger buried networks to which they are connected.

[Image: Two views of the tunnel vent on Governors Island; photos by BLDGBLOG].

The Battery Tunnel has a particularly noticeable vent, pictured above, and the Holland Tunnel also vents out near my place of work.

[Image: Holland Tunnel exhaust tower; photo via SkyscraperPage.com].

As historian David Gissen writes in his excellent book Subnature: Architecture’s Other Environments, New York’s ventilation control structures are “strange buildings” that have “collapsed” the difference between architecture and civil engineering:

The Holland Tunnel spanned an enormous 8,500 feet. At each end, engineers designed ten-story ventilation towers that would push air through tunnels above the cars, drawing the vehicle exhaust upward, where it would be blown back through the tops of the towers and over industrial areas of the city. The exhaust towers provided a strange new building type in the city—a looming blank tower that oscillated between a work of engineering and architecture.

As further described in this PDF, for instance, Holland Tunnel has a total of four ventilation structures: “The four ventilation buildings (two in New Jersey and two in New York) house a total of 84 fans, of which 42 are blower units, and 42 are exhaust units. They are capable, at full speed, of completely changing the tunnel air every 90 seconds.”

[Image: The Holland Tunnel Land Ventilation Building, courtesy of Wikipedia].

Several years ago a friend of ours remarked that she didn’t like staying in hotels near Columbus Circle here in New York because that’s the neighborhood, she said, where all the subways vent to—a statement that appears to be nothing more than an urban legend, but that nonetheless sparked off a long-term interest for me in finding where the underground weather systems of New York City are vented to the outside. Imagine an entire city district dedicated to nothing but ventilating the underworld!

[Image: The house on Joralemon Street; photo by BLDGBLOG].

This is a topic I will no doubt return to at some point soon—but, for now, if you want to see a disguised entrance to the 4/5 line, walk down Joralemon Street toward the river and keep your eyes peeled soon after the street turns to cobblestones.

(The house on Joralemon Street first discovered via Curbed).

Sea Caverns of Singapore

[Image: Singapore expands beneath the Pacific Ocean; via the BBC].

Singapore has embarked upon the excavation of an underground oil reserve, expanding the city’s industrial port beneath the floor of the Pacific Ocean. It is “no ordinary construction site,” the BBC tells us, but an elaborate project of engineering and infrastructure currently underway “several hundred feet underground, below the seabed in Singapore.”

There, workers are “laboring around the clock to carve out an enormous network of caverns that will eventually store vast amounts of oil.”

[Images: Singapore expands beneath the Pacific Ocean; via the BBC].

More specifically, “Five oil storage caverns are being dug out under the seabed of Banyan Basin, off Jurong island, a series of mostly-reclaimed islands that house most of Singapore’s petrochemical industry.”

Artificial caverns built offshore from manmade islands?

The terrestrial mechanics of Singapore’s existence are increasingly interesting, if ecologically problematic. As Pruned‘s recent look at the city’s sand-importation economy shows, the island-nation exists through a near-ceaseless act of geological accumulation, piecing itself together and expanding from the inside out using deposits of earth taken from neighboring countries.

Singapore, Pruned writes, “has been reclaiming land from the sea since the mid-1960s, expanding its total land area by nearly 25% as a result. And it’s still growing. With no hinterlands to supply it with natural resources, however, it has to import sand, the primary landfill material. But exactly where, the Singaporean government does not disclose. Its supply lines are not public information.”

Earlier this year, we looked at the idea of forensic geology, whereby even a single piece of sand can be tracked back to its terrestrial origins. As that link explains, the source of electronics-grade silicon is often deliberately occluded from public documents, treated as an industrial trade secret. Here, though, it is not microchips but internationally recognized political territory that is being mined, traded, and assembled—a black economy without audit or receipts.

Singapore’s off-the-books experiment in sovereign expansion—not through military conquest but through intelligent geotextiles, Herculean dredging projects, and, of course, new undersea caverns—is perhaps a kind of limit-case in how nation-states not only utilize natural resources but literally build themselves from the ground up (and down) as political acts of landscape architecture.

(Earlier on BLDGBLOG: Artificial Caverns Expanding Beneath Chicago).

Tunnel / Countertunnel

For a variety of reasons, I was recently looking at a May 2011 report from the Air Force Research Laboratory on “Robotics: Research and Development.”

[Image: From an Air Force Research Laboratory presentation on “Robotics: Research and Development”].

There—amidst plans for unmanned robotic ground convoys and autonomous perimeter defense systems for future bases and cities, not to mention fleets of robotic bulldozers field-tested for use in mine-clearance operations—there was one slide about something called “counter tunnel robotics.”

Being obsessed with all things underground, this immediately caught my eye—especially as this is a program whose goal is to “develop an unmanned system with the capability to access, traverse, navigate, map, survey, and disrupt operations in rough subterranean environments.” A “miniature mapping payload” is under development, one that will allow for accurate cartographic surveys of complex underground spaces; but, because current methods “will not work in the more challenging (non-planar) tunnel environments,” the Air Force explains, the new focus for R&D “will be on developing 3D mapping techniques using 3D sensors.”

From last month’s Association for Unmanned Vehicle Systems International—or AUVSI—conference in Washington D.C., where this technology was discussed in detail:

The [Counter Tunnel Robotics] system is an innovative all-terrain mobility platform capable of accessing tunnel systems through a small (8 inch) borehole and traversing adverse tunnel terrain including vertical obstacles up to 2ft in height and chasms up to 2ft in length. The system’s function is to provide a platform capable of carrying a small sensor package while navigating and overcoming terrain obstacles inside the tunnel. Counter tunnel technologies are needed to support intelligence gathering and safety of troops and personnel in unmapped and unknown tunnel environments. The system is the initial step in achieving a fully autonomous counter tunnel system.

A few things worth pointing out here include the mind-boggling image of “a fully autonomous counter tunnel system” operating on its own somewhere inside the earth’s surface, like something out of a Jonathan Lethem novel, surely fueling the imaginations of scifi screenplay writers the world over—a planet infested with artificially intelligent tunneling machines. But it is also worth noting that these systems will very likely not be confined to use on—or in—the earth. In fact, autonomous tunnel-exploration robots will find a very hearty market for themselves exploring caves on the moon, on Mars, on asteroids, and perhaps elsewhere, in a fairly clear-cut example of military research finding a productive home for itself in other contexts.

However, I also want to mention how fascinating it is to see that the Air Force Research Laboratory is involved in this, as it actually penetrates the surface of the earth and is very much a project of the ground. It is a landscape project. But the implication here is that these autonomous spelunking units are perhaps seen as a new type of ordnance—that is, they are intelligent bombs that don’t explode so much as explore. They are artillery and surveillance rolled into one. Imagine a bomb that doesn’t destroy a building: instead, it drops into that building and proceeds to map every room and hallway.

But, much more interestingly, there is perhaps also an indication here that a conceptual revolution is underway within the Air Force, where the earth itself—geological space—is seen as merely a thicker version of the sky. That is, the ground is now seen by Air Force strategists as an abstract, three-dimensional space through which machines can operate, like planes in the sky, navigating past “terrain obstacles” like so much turbulence. In a sense, the inside of the earth becomes ontologically—and, certainly, technically—identical to the atmosphere: it is an undifferentiated space that can be traversed in all directions by the appropriate machinery.

Flying and tunneling thus become elided, revealed as one and the same activity; and the Air Force is understandably now in the business of the underground.

[Image: “A U.S. Air Force F-22A Raptor Stealth Fighter Jet Executes A Maneuver Through A Cloud Of Vapor”—that is, it tunnels through the sky—”At The 42nd Naval Base Ventura County Air Show, April 1, 2007, Point Mugu, State of California, USA”; photo by Technical Sgt. Alex Koenig, United States Air Force; Courtesy of Defense Visual Information and the United States Department of Defense].

That, of course, or it was simply an issue of the wrong office receiving research funds for this, and, next fiscal quarter, the Army dutifully takes over…

(For a bit more on underground military activity, see this older post on BLDGBLOG).

Subterranean Machine Resurrections

[Image: Photo by Brian Harkin for The New York Times].

There is clearly a machines-and-robots theme on the blog this morning. I was fascinated last week to read that New York will soon have “its own subterranean wonder: a 200-ton mechanical serpent’s head” buried “14 stories beneath the well-tended sidewalks of Park Avenue.” In other words, a “gargantuan drill that has been hollowing out tunnels for a train station under Grand Central Terminal” will soon become a permanent part of the city, locked forever in the region’s bedrock. It will be left underground—”entombed” in the words of Michael Grynbaum, writing for the New York Times— lying “dormant and decayed, within the rocky depths of Midtown Manhattan.”

The machine’s actual burial is like a Rachel Whiteread installation gone wrong: “In an official ceremony this week, the cutter will be sealed off by a concrete wall; the chamber will then be filled with concrete, encasing the cutter in a solid cast, Han Solo-style, so that it can serve as a support structure for the tunnel. A plaque will commemorate the site.”

“It’s like a Jules Verne story,” the head of construction for NY’s Metropolitan Transportation Authority endearingly remarked. And the machine itself is an alien wonder:

A recent visit to the cutter’s future crypt revealed a machine that evokes an alien life form that crashed to earth a millennia ago. Its steel gears, bolts and pistons, already oxidizing, appeared lifeless and fatigued. A wormlike fan, its exhaust pipe disappearing into the cutter’s maw, was still spinning, its drone not unlike a slumbering creature’s breath.

I’m tempted to write a short story about a cult of Aleister Crowley-obsessed tower dwellers on the Lower East Side, in the year 2025 A.D., intent on resurrecting this mechanical worm, like something out of Dune, goading it to re-arise, pharaonic and possessed, into the polluted summer air of the city. Grinding and belching its way to dark triumph amidst the buildings, now shattered, that once weighed it down, it is Gotham’s Conqueror Worm.

[Image: Promotional poster for the otherwise unrelated film Conqueror Worm, aka Witchfinder General].

But that would be to rewrite something that, to some extent, already exists. In Jonathan Lethem’s recent novel Chronic City, a tunneling machine goes “a little out of control” beneath the surface of New York, resurfacing at night to wreak havoc amongst the boroughs. From the book:

“I guess the thing got lonely—”
“That’s why it destroys bodegas?” asked Perkus.
“At night sometimes it comes up from underneath and sort of, you know, ravages around.”
“You can’t stop it?” I asked.
“Sure, we could stop it, Chase, it we wanted to. But this city’s been waiting for a Second Avenue subway line for a long time, I’m sure you know. The thing’s mostly doing a good job with the tunnel, so they’ve been stalling, and I guess trying to negotiate to keep it underground. The degree of damage is really exaggerated.”

And soon the machine—known as the “tiger”—is spotted rooting around the city, sliding out of the subterranean topologies it helps create, weaving above and below, an autonomous underground object on the loose.

In any case, the entombed drill will presumably outlast the city it sleeps beneath; indeed, if it is ever seen again, it will be a much more geological resurrection. As Alex Trevi of Pruned suggested over email, the machine will be “left there, perhaps forever, and will only surface when NYC rises up in a new mountain range and starts eroding.”

(Thanks to Jessica Young for the reminder about Lethem’s tiger).

Hadean Transport

Greenpeace has released these images of a train carrying nuclear waste through Valognes, France. Shot with infrared film, the photos show a demonic red glow coming from inside the bellies of the railcars.

[Images: Via National Geographic].

“The train is hauling a so-called CASTOR convoy,” National Geographic explains, “named after the type of container carried: Cask for Storage and Transport Of Radioactive material. These trademarked casks have been used since 1995 to transport nuclear waste from German power plants to France for reprocessing, then back to Germany for storage.”

I’m reminded of a short video shown last week at the Landscape Futures Super-Workshop here in Los Angeles.

Produced by Smudge Studio/Friends of the Pleistocene, the film shows us a flatbed truck carrying transuranic nuclear waste along a desert highway. As Smudge write, “Our brief passing of this truck was a momentary point of contact with this waste, bound for deep time.” Filmed in sepia-toned Super-8, the 35-second film has a timeless and dramatic surreality, verging on postapocalyptic.

I should add, briefly, that the name of the train seen in the first three images—a CASTOR convoy—lends all of this a nicely symbolic overtone. In Roman mythology, Castor and Pollux were twin brothers; Castor was mortal, Pollux immortal, and it should come as no surprise to learn that Castor is eventually killed.

However, in one version of the story, “Castor’s spirit went to Hades [Hell], the place of the dead, because he was a human. Pollux, who was a god, was so devastated at being separated from his brother that he offered to share his immortality with Castor or to give it up so that he could join his brother in Hades.” I mention this otherwise superficial overlap because Smudge’s notion that nuclear waste is on its way to being entombed in “deep time,” far below ground, takes on explicitly Hadean resonance when put into the context of something called a CASTOR train.

Project Iceworm

[Image: Camp Century under construction; photograph via Frank J. Leskovitz].

Camp Century—aka “Project Iceworm”—was a “city under ice,” according to the U.S. Army, a “nuclear-powered research center built by the Army Corps of Engineers under the icy surface of Greenland,” as Frank J. Leskovitz explains.

A fully-functioning underground city, Camp Century even had its own mobile nuclear reactor—an “Alco PM-2A”—that kept the whole thing lit up and running during the Cold War.

[Images: Camp Century under construction; photographs via Frank J. Leskovitz].

According to Leskovitz, the Camp’s construction crews “utilized a ‘cut-and-cover’ trenching technique” during the base’s infra-glacial assembly:

Long ice trenches were created by Swiss made “Peter Plows,” which were giant rotary snow milling machines. The machine’s two operators could move up to 1200 cubic yards of snow per hour. The longest of the twenty-one trenches was known as “Main Street.” It was over 1100 feet long and 26 feet wide and 28 feet high. The trenches were covered with arched corrugated steel roofs which were then buried with snow.

Prefab facilities were then added, with “wood work buildings and living quarters… erected in the resulting snow tunnels.”

[Images: Camp Century under construction; photographs via Frank J. Leskovitz].

Leskowitz continues:

Each seventy-six foot long electrically heated barrack contained a common area and five 156 square foot rooms. Several feet of airspace was maintained around each building to minimize melting. To further reduce heat build-up, fourteen inch diameter “air wells” were dug forty feet down into the tunnel floors to introduce cooler air. Nearly constant trimming of the tunnel walls and roofs was found to be necessary to combat snow deformation.

Camp Century went from a scientific outpost to a potential U.S. Army site for hosting battle-ready nuclear missiles underneath the Greenland ice sheet—the so-called “Project Iceworm” mentioned earlier.

The following four short videos, produced by the U.S. military, explore the site’s strange technical circumstances as well as its complicated defensive history.

“During this period of the Cold War,” Leskovitz explains, “the U.S. Army was working on plans to base newly designed ‘Iceman’ ICBM missiles in a massive network of tunnels dug into the Greenland icecap. The Iceworm plans were eventually deemed impractical and abandoned,” and, “due to unanticipated movement of the glacial ice,” the entire subterranean complex was eventually left in ruins.

The idea that the moving terrain of a glacial ice sheet could be considered a stable-enough launching point for nuclear missiles is astonishing, and the idea that the U.S. Army once ran a top secret—and rather Metallica-sounding—”city under ice” just shy of the North Pole only adds to the story’s disarming surreality.

[Image: The plan of Camp Century; via Frank J. Leskovitz].

In any case, more photographs, including of the Army’s mobile nuclear reactor, are available on Leskovitz’s own site.

*Update* In August 2016, a study published in the journal Geophysical Research Letters suggested that “climate change could remobilize abandoned hazardous waste thought to be buried forever beneath the Greenland Ice Sheet,” specifically referring to the ruins of Camp Century.

“Camp Century could start to melt by the end of the century,” the American Geophysical Union summarizes. “If the ice melts, the camp’s infrastructure, as well as any remaining biological, chemical and radioactive waste, could re-enter the environment and potentially disrupt nearby ecosystems.”

[Image: U.S. Army photograph, via the American Geophysical Union].

Here is a PDF of the complete paper.

Peel Street Caves

[Image: A 3D laser scan of the Peel Street Caves—actually a former sand mine beneath the city—courtesy of the Nottingham Caves Survey].

It’s hard to resist a note that says a “new cave” has been “uploaded,” but the Nottingham Caves Survey—previously mentioned here—has announced just that, putting 3D laser scans of the incredible Peel Street Caves on their website.

Like smoke rings breaking apart and slowly looping inside the planet, their near-endless recursivity makes it almost impossible to see where they begin.

[Image: Plan of the Peel Street Caves, courtesy of the Nottingham Caves Survey].

The “caves,” however, are really a former sand mine:

It is thought that the mine was in use from around 1780 to 1810. However it is possible that the mine was worked from an even earlier date, acting as a direct source of sand for a nearby glass works which was in operation until 1760. The mine was forgotten until about 1892 when the caves became a tourist attraction, “Robin Hood’s Mammoth Cave.” A map of 1844 shows a number of properties on Mansfield Road. Some of these have basements cut into the sandstone which open out into the sand mine.

The caves were transformed into bomb shelters during WWII. How spectacular to own one of those basements, though, that “open out into the sand mine”—and how doubly spectacular to discover such a connection only accidentally, tapping on a hollow wall downstairs or finally forcing open a door that had been rusted shut, finding, there both beneath and behind your house, this strange labyrinth of voids uncoiling through the city.

Read more at the Nottingham Caves Survey (or previously on BLDGBLOG).

Stratigraphies of Infestation

In his book Rats, Robert Sullivan—an author whose work we previously reviewed here—offers a glimpse of how the city is seen through the eyes of the pest-control industry.

[Image: Rats by Robert Sullivan].

Effective rodent control requires a very specific kind of spatial knowledge, Sullivan suggests, one that often eludes architects and city planners.

Sullivan quotes one rat-control professional, for instance, who “foresees a day when he will be hired to analyze a building’s weaknesses, vis-à-vis pests and rodents… ‘They design buildings to support pigeons and for infiltration by rodents because they don’t think about it. Grand Central Station, right? They just renovated it, right? Who knows what they spend on that, right? You know how much they spend on pest control? You know how much they budgeted? Nothing. I did all the extra work there, but they had to pay us out of the emergency budget.'”

Pest control here becomes an explicitly architectural problem, something you can design both for and against. Imagine an entire degree program in infestation-resistant urban design.

Sullivan points out that a massive, urban-scale architectural intervention, in the form of a quarantine wall fortifying all of New York City against rats, was once tentatively planned: “There was a time in New York, in the 1920s,” he writes, “when scientists proposed a great wall along the waterfront to shut out rats completely, to seal out rats and, thus, forever end rat fear. Eventually, though, the idea was deemed implausible and abandoned: rats will always get through.”

But it’s the particular subset of urban knowledge that has been actively cultivated within the pest control industry that fascinates me here. Sullivan spends a bit of time with a man named Larry Adams, a municipal rodent control expert. “If you hang around Larry long enough,” Sullivan says, “you realize that he sees the city in a way that most people don’t—in layers.” And what follows is well worth quoting in full:

He sees the parks and the streets and then he sees the subways and the sewers and even the old tunnels underneath the sewers. He sees the city that is on the maps and the city that was on the maps—the city’s past, the city of hidden speakeasies and ancient tunnels, the inklings of old streams and hills.
“People don’t realize the subterranean conditions out there,” he likes to say. “People don’t realize the levels. People don’t realize that we got things down there from the Revolution. A lot of people don’t realize that there’s just layers of settlers here, that things just get bricked off, covered up and all. They’re not accessible to people, but they are to rats. And they have rats down there that have maybe never seen the surface. If they did, then they’d run people out. Like in the movies. You see, we only see the tail end of it. And we only see the weak rats, the ones that get forced out to look for food.”

The book’s wealth of rat-catching anecdotes are often unbelievable. “More than anything,” Sullivan reflects, “I have learned from exterminators that history is crucial in effective rat analysis.”

In fact, history is everything when it comes to looking at rats—though it is not the history that you generally read; it is the unwritten history. Rats wind up in the disused vaults, in long underground tunnels that aren’t necessarily going anywhere; they wind up in places that are neglected and overlooked, places with a story that has been forgotten for one reason or another. And to find a rat, a lot of times you have to look at what a place was. One exterminator I know tells the story of a job on the Lower East Side in an old building where rats kept appearing, nesting, multiplying, no matter how many were killed. The exterminator searched and searched. At last, he found an old tunnel covered by floorboards, a passageway that headed toward the East River. The tunnel was full of rats. Later, he discovered that the building had housed a speakeasy during Prohibition.

Or this disconcerting image of an infested basement that was never fully demolished—it was simply forgotten, walled off beneath the surface of the city. Here, Sullivan visits an abandoned lot with a rat-catching expert named Isaac, writing that, “just before we drove off, two men walked by and stopped at the fence; they looked into the abandoned lot and spoke with Isaac in Spanish.”

They told Isaac that they remembered when the lot was the site of an old wooden house that had become abandoned and filled with rats. They remembered the house being demolished and partially buried—the basement was still there, they said. They pointed to the ground, saying that the old home was still beneath it, still rat-infested.

What a perfectly haunting line: They pointed to the ground, saying that the old home was still beneath it, still rat-infested. (And if anyone out there has read The Rats by James Herbert, you might remember that the novel begins with a vaguely similar urban image).

[Image: A “rat king,” via Wikimedia].

Speaking later with Mike, another rat-control expert, Sullivan learns how the stratigraphy of the city takes shape in the mind of the exterminator: “I was getting ready to leave—Mike was just too busy. But then Mike was reminded of an aspect of the nature of rats in the city, and as he put down the phone, he said, ‘You know, I heard there are three layers of sewer lines.’ He counted them off on his fingers. ‘There are the ones from the 1800s, the ones from the 1700s, and the ones they don’t have maps for anymore. Once in a while, they use that old line, when they’re doing construction or something, and you read in the papers that there are hundreds of rats coming up. Well, those rats that are in the third line, they haven’t even seen man before.’”

These stratigraphies of infestation are wonderfully horrifying—but also perfectly and immediately available to the architect and urban planner as practical design challenges. How does one deal with “what was on the maps,” as Sullivan phrases it, while at the same time designing a pest-unfriendly metropolis?

Taking as their design target rats and other “unwanted inhabitants” of the city, as Sullivan phrases it, what inspired collaborations could we develop amongst public health inspectors, urban ecologists, pesticide manufacturers, historical cartographers, city archivists, materials scientists (Sullivan writes, for instance, that Larry Adams, mentioned earlier, has actually developed his own special mix of rat-resistant concrete: “With his expertise, Larry has developed his own rat-eradication techniques, such as concrete mixed with broken glass to keep the rats from gnawing through the concrete. ‘Sometimes, they’ll still cut through before the concrete hardens. So sometimes, I use glass and industrial-strength steel wool and put it in with the concrete and make one big goop with it’”), and, of course, architects and planners? How realistic—let alone ethical—a design challenge is the rodent-free metropolis?

City of Holes

[Image: Courtesy of the Nottingham Caves Survey].

Some new images of the ongoing laser-scan project taking place in the caves beneath Nottingham, England, have been released. “The Nottingham Caves Survey is in the process of recording all of Nottingham’s 450+ sandstone caves,” the organizers explain.

From malting caves and circular kilns to a 19th-century underground butcher, via the Shire Hall and, of course, Mortimer’s Hole, it’s intoxicating to imagine a city whose most exciting discoveries lie somewhere far below its own streets and urban surfaces, in a delirious sprawl of artificially enlarged sandstone caves.

[Images: Courtesy of the Nottingham Caves Survey].

Check out this video, below, which is basically just a fly-and-walk-through of the resulting scans.

Like the short film La Subterranea, which we screened a few years back at the Silver Lake Film Fest, the video suggests a fundamentally porous urban world in which, as Alex Trevi writes, “day and night, laser scanners that have gone mobile will be deployed into these voids, and bit by pinprick bit, these labyrinths that once confounded, concealed and even consumed trespassers with their disorienting mazes will resolve into total comprehensibility. Every detail will be known to you.”

The city, CAT-scanned, becomes a labyrinth of complete transparency.

Imagine, for instance, a city consumed by its own archaeology—a hole complex of obsessive-compulsive excavation—where the streets are just the thinnest of bridges spanning a sponge-like void below.

[Images: Courtesy of the Nottingham Caves Survey].

For more, check out the site of the Nottingham Caves Survey, which has link after link after link to explore; perhaps start with their Cave Map and move onward from there.

[Image: The scanner at work; courtesy of the Nottingham Caves Survey].

All in all, this might be the best advertisement for a city—intentional or not—that I’ve ever seen: drawing people to visit based on quasi-holographic laser scans of that city’s underground history.

(Via Archaeology News).