원정 개요

On Lhotse, Erickson and O'Neill went directly from Everest C4 at the South Col to Lhotse's C4 at about 7800m (below the couloir) on the 25th, slept there that night and summited Lhotse early in the next morning (26 May). No Sherpa accompanied them.

They used oxygen from the South Col to the summit of Lhotse and down to C2. (They had already been using it on Everest in C4 to the top of Everest and back to C4).