Close-up of Cornelius Sullivan at the geographic South Pole, 1996 

Cornelius Sullivan at the geographic South Pole, 1996 

Artist's conception of the geographic South Pole Station soon to be built, 1997 

Close-up of an ice core sample from the Antarctic, 1999 

Dog shelters outside of Ernest Shackleton's hut, Antarctica, 1981 

Chart showing 7 countries' claims on Antarctic territory, after 1975 [?] 

Fire Department, McMurdo Station, Antarctica, 1995 

Close-up of a trench dug by researchers to study microbes living in ice fissures in the Antarctic, 1999 

Icebreaker coming to McMurdo Station, Antarctica, 1995 

Two scientists working with an ice core sample apparatus from the Antarctic, 1999 

Krill on ice algae, Antarctica, 1980s-1990s 

Iceberg in the Weddell Sea, near Antarctica, 1992 

Weddell seal under sea ice, Antarctica, 1980s 

Emperor penguins underwater, Antarctica, 1984 

Lone man walking on a snowy slope, Antarctica 

Chart showing the comparative size of Antarctica and the U.S., 1977 

Ernest Shackleton's hut, with Mount Erebus in background, Antarctica, 1981 

Interior of Ernest Shackleton's hut, Antarctica, 1981 

Ernest Shackleton's hut, with Mount Erebus in background, Antarctica, 1981 

Robert Scott's hut, Cape Evans, Antarctica, 1995