Hualcán, Southwest ridge. J. Curry Slaymaker and David Ciochetti made the first ascent of the southwest ridge of Hualcán (20,096 feet) on July 7. A camp was established at 17,000 feet above Laguna Cochca, where a third member of the group, Dan Langmade, stayed weak with dysentery. The two needed seven hours to complete the 50° to 60° ridge on stable snow. They then passed from the west to the slightly higher east summit. They bivouacked at 19,000 feet on the descent.