Cerro Negro Aspero. In the winter of 1989, in August, we attempted this massive mountain but a blizzard drove us back. At the beginning of the southern summer Humberto Campodónico, Roberto Pereyra and I made a successful second try. On November 18, we walked up the valley from the post of Guardia Vieja to camp at 4325 meters. The next day unstable weather and mountain sickness stopped our attempt. Therefore, we placed a camp at 5400 meters, only 100 meters below the top. After a trying night due to siroche, wind and cold, we set out for the summit (5500 meters, 18,045 feet), which we reached at a very early hour. Cerro Negro Aspero was one of the more important yet unclimbed peaks in the Agua Negra district.

Marcelo Scanu, Centro de Investigaciones Arqueológicas de Alta

Montaña, San Juan, Argentina