Anker and his colleagues investigated what happened to them, testing out the durability of their clothing and equipment to establish whether Mallory and Irvine could have reached the summit in the conditions they faced in 1924.
Conrad Anker discovered George Mallory’s body lying on the mountain in 1999, 75 years after he had disappeared into the clouds near the summit.
Accompanying Anker to retrace Mallory’s steps was British climber Leo Houlding.
Anker and Houlding were joined by Kevin Thaw, Ken Sauls and Jimmy Chin, and a back-up team that included technical and medical support.
Anker and Houlding successfully free-climbed the Second Step, having first removed the Chinese ladder (which was later replaced).