Charted by the British Antarctic Expedition (Nimrod Expedition) (1907-09) under Shackleton, was named by Shackleton after Aeneas Mackintosh, the Scottish-born Second Officer on the expedition ship - the Nimrod, and later leader of the Ross Sea party during Shackleton's Imperial Trans-Antarctic Expedition, 1914–17. Mackintosh disappeared on 8 May 1916 while walking on the ice in McMurdo Sound, between Hut Point and Cape Evans.