Chacraraju Este Attempt and Chopicalqui, Southeast Ridge. Jun’ichi Okabe and Shusuke Magara attempted in June to climb a route on Chacraraju Este to the left of the Japanese route of 1972. They gave up after being swept by an avalanche some 650 feet from the summit. They then climbed Chopicalqui by its southeast ridge. From camp at 18,000 feet, they climbed to bivouac at 18,700 and 20,350 feet and reached the summit on July 4.