Within the year, Harding was teaming up with Mark Powell, one of the premier Yosemite climbers of the 1950s. After Harding had been part of a group which failed to climb the magnificent and vertical Northwest face of Half Dome, he and Powell found themselves in the Valley, too late by a couple of days to make the first ascent of that feature as another group, led by Harding's southern Californian rival, Royal Robbins, had just completed it.