The climb itself demands skill. The climb is often on black ice in which crampons and other high tech climbing equipment are required. On November 10, 1993 three parties of climbers, one ascending and two descending, were caught in an avalanche on the steep slopes below the Veintimilla summit. This avalanche buried ten climbers in a crevasse at . These climbers comprised six French, two Ecuadorians, one Swiss, and one Chilean. After the ten climbers were buried in snow, it took twenty people and ten days to find their bodies. This was considered the worst climbing accident in Ecuador.