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

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

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

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

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.