Bryan and Cherry Alexander / Explorer Sir Ernest Shackleton's grave at Grytviken. South Georgia, Sub Antarctica.

Flip Nicklin / Grave of Earnest Shakelton and others, South Georgia Island

Flip Nicklin / Grave of Ernest Shackleton, South Georgia Island

Sue Flood / Hut at Cape Royds from Sir Ernest Shackleton's Nimrod Expedition (1907-1909) Ross Sea, Antarctica, December 2008

Flip Nicklin / Grave of British explorer Ernest Shackleton, South Georgia Island

Flip Nicklin / Grave of British explorer Ernest Shackleton, South Georgia Island

Roy Mangersnes / Sir Ernest Shackleton's grave, Grytviken whaling station, South Georgia, Antarctica. November

Rick Tomlinson / Whalers cemetery at Grytviken, where Ernest Shackleton was buried in 1922. South Georgia, February 2007.

Rick Tomlinson / Ernest Shackleton's grave at the whalers cemetery, Grytviken, South Georgia, February 2007

Colin Monteath / Climbers cross open crevasses on Fortuna Glacier retracing Sir Ernest Shackleton's epic crossing of South Georgia in 1916

Colin Monteath / Climber in severe blizzard attempting to cross Ernest Shackleton's route, South Georgia Island

Colin Monteath / The grave of British explorer Ernest Shackleton, South Georgia Island

Colin Monteath / Climbers in severe blizzard attempting to cross Ernest Shackleton's route, South Georgia Island

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) rookery outside Shackleton's 1908 hut at Cape Royds, Ross Island, Antarctica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) rookery in blizzard outside Shackleton's 1908 hut at Cape Royds, Ross Island, Antarctica

Martha Holmes / Sir Ernest Shackleton's grave, Grytviken whaling station, South Georgia, Falkland Islands

Onne van der Wal / The gravestone of the famous Antarctic explorer, Sir Ernest Shackleton, in the cemetery at Grytviken, South Georgia.

Onne van der Wal / Ernest Shackleton's cross on Hope Point at the entrance to Grytviken harbour, South Georgia. It was erected by former crew members of the "Endurance".

Flip Nicklin / Grave of British explorer Ernest Shackleton, South Georgia Island

Flip de Nooyer / The grave of British explorer Ernest Shackleton, South Georgia Island