Operation Highjump: four thousand American servicemen and thirteen ships sent to map Antarctica in 1946.
Shackleton's ship crushed in the ice and every man brought home; Lansing's telling.
Retrace the last leg of Shackleton's 1916 rescue march over the pass from Fortuna Bay to the Stromness whaling station.
Sail through a narrow gap into the flooded caldera of an active volcano, past a ruined whaling station and beaches warm enough to dig a hot bath.
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