On Getting Naked in Antarctica

Stuck at the South Pole during its coldest, darkest season? Find a sauna, grab some bunny boots, and join the most exclusive club in the world. 
Jay Studer took this picture of Sven Lidstrom at the South Pole when the temperature was -103 degrees Fahrenheit. (Jay Studer/NSF)

Antarctica, as my colleague Olga Khazan explained in 2013, is basically outer space on earth. Scientists who hole up at Antarctic research stations during the continent’s eight-month-long winter deal with serious burdens of both the physical and mental sort: the cold is deadly, the darkness oppressive. Once cabin fever sets in, it’s tempting to just knock yourself out with alcohol. But one particular line in Khazan’s article demanded further investigation:

Occasionally, they entertained themselves with daredevil stunts, like running from a 200-degree sauna to touch the South Pole while wearing nothing but shoes.

Make no mistake: Streaking at the South Pole isn’t an activity to be taken lightly. And it’s not something you do on a whim, after one too many shots of whiskey at Club 90 South. On the contrary, getting naked in Antarctica is a hallowed tradition that requires planning and teamwork.

The objective: to endure a temperature swing of 300 degrees Fahrenheit by warming up in a sauna, heated to 200 degrees, and then running, naked, to and around the Ceremonial South Pole when the outdoor temperature is below -100 degrees. The select few who have participated in this rite belong to an exclusive group: the 300 Club.

The Ceremonial South Pole is surrounded by national flags of the countries that were the first to sign the Antarctic Treaty. (Deven Stross/NSF)

First, let’s get you situated. The U.S. operates three research stations in Antarctica. McMurdo Station, on Ross Island, is considered “the New York City of Antarctica” because many visitors to the continent either go there or pass through the facility en route to another station. Palmer Station, on Anvers Island, is smaller and only accommodates 46 people at most. Then there’s Amundsen-Scott, also known as “the South Pole Station” because it’s located on the Antarctic plateau at the geographic South Pole. The Ceremonial South Pole, an actual pole with a sphere on top, circled by flags of nations, stands a few hundred feet from the station. Up to 150 people work at Amundsen-Scott during the South Pole’s summer, which lasts roughly from November to February. Around 50 scientists and other workers stay there over the winter. It’s this latter group that has the opportunity to join the 300 Club.

Kevin Bjella, now an engineer at the Cold Regions Research and Engineering Laboratory in Alaska, spent the winters of 2001 and 2002 at Amundsen-Scott as a carpenter. His recollection of joining the 300 Club highlights the downright hazardous nature of the challenge. “It’s not that far of a distance” from the station to the ceremonial pole, he told me, “but when it’s dark, and a hundred below, and people are naked, the safety aspect is really huge.” Most people do the challenge in groups, and usually there are helpful bystanders who line up outside the station with flashlights. A fair bit of anticipation precedes the event; the temperature only drops below -100 a few times each winter, and when it does, you’ve got to be ready to go.

Inside the station, key weather information is displayed on a video screen. It’s usually around late July or August when the “winter-overs” start watching the screen more closely in anticipation of a -100 degree day. When the timing and temperature were right one weekend in 2001, Bjella recalled, he and eight others—“pretty equally split, men and women”—went up to the second floor of "the dome," the station's iconic building that was demolished in 2009, and got in the sauna. “I remember spending something like 20 minutes or half an hour in the sauna, [although] it’s supposed to be 200 degrees. I can’t believe I spent that long in a 200-degree sauna, but maybe it was just psychological, knowing we had to really get warmed up.”

“And then we went and did it, wearing just our bunny boots,” said Bjella, referring to the white rubber boots that the U.S. military issues for use in the extreme cold, and that nearly everyone wears in Antarctica. “We put on the bunny boots and just ran out of the sauna” to the floor of the dome, and then up a long ramp, “like a big white snow ramp,” that spans about 50 yards from the door of the dome to the ice of the Antarctic plateau.

“The physiological altitude there is pretty intense,” he added (the plateau is almost 10,000 feet above sea level). Despite being physically fit and having grown up at an altitude of 7,000 feet in Colorado, Bjella “never really acclimated” to Antarctica. The cold air and the low pressure combine to produce a “physiological altitude” that exceeds the 10,000-foot physical altitude and changes every day according to the barometric pressure. Even after being at the South Pole for a few months, Bjella and others still found themselves getting winded, on occasion, just by walking up and down steps. And running up the ramp to the ice during the 300 challenge was exhausting.

“You get to the top of the ramp and you’re winded,” he recalled. And even then, participants still have about 100 yards to go to get to the Ceremonial Pole and another 100 yards to run on the way back— provided they don’t add extra yards to their trip by running off course.

Few 300 Clubbers are lucky enough to have their -100 degree day coincide with a full moon. This photo shows the Amundsen-Scott telescope under the moon in April 2012. (Carlos Pobes/NSF)

When Kris Perry, who lives and works in Alaska now, did the 300 challenge for the first time, he walked right past the pole. He was wearing a headlamp, but the pole was just outside the light it cast, and he didn’t realize his mistake until he had missed the spot by at least 20 yards.

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