(FILES) This handout file photo taken on October 31, 2002 shows an aerial view of the elevated station (bottom-C) being built at the US Amundsen-Scott South Pole Station in Antarctica. Two sick workers were evacuated from a remote US research station near the South Pole on June 22, 2016 in a risky rescue mission carried out in the dead of Antarctica's winter, a US official said. A Twin Otter turboprop plane flew in dark and cold conditions to pick up the workers from the Amundsen-Scott station, about 250 meters from the geographic South Pole, a spokesman for the US National Science Foundation (NSF), Peter West told AFP. / AFP PHOTO / USAF/NATIONAL SCIENCE FOUNDATION / David McCARTHYDAVID MCCARTHY/AFP/Getty Images
