Pucamataraju. The Quebrada Rurec opened to our admiration, dominated by imposing Huantsán. Night closed in as Giorgio Pettigiani and I camped on the shore of Lake Tararhua at 14,450 feet. The next night we were camped at 16,000 feet, east of Cashan Este. Away at dawn on May 18, we climbed north to the col east of Pucamataraju, the summit which lies just east of Cashan Este. The ridge was heavily corniced to the north. We continued on and on along the delicate ridge and finally surmounted the sharp summit of Pucamataraju (18,111 feet).
Giuseppe Agnolotti, Club Alpino Italiano