Tupungato. Germans Josef Heinl, leader, Peter Vogler and Georg Peter Menz made a new route on Tupungato (21,490 feet) on January 3. They approached from Santa Clara, Argentina, and placed Base Camp below the northeast ridge of Yesera. On December 25, 1974 Vogler, Menz and Wolfgang Niederacher made the first ascent of the northeast ridge of Yesera (15,730 feet). They then crossed the 15,250-foot Fraile Pass and dropped to the Tupungato Glacier. On January 1 they climbed a rib which divides the east face from the southeast-face glacier and camped at 17,000 feet. Difficult ice and rock brought them to a bivouac 1000 feet below the summit, which they finally reached up gentler snow.