

"The shore party consisted of fifteen men, including Shackleton. Professor T.W. Edgeworth David and Douglas Mawson had embarked at Sydney. Their sledge journey to the south magnetic pole was one of the three foremost achievements of this expedition. The other two achievements were, first, the ascent and survey of Mount Erebus (12,448 feet), the active volcano on Ross Island and, second, the southern sledge journey, which reached within 100 miles of the south pole" (ODNB).