New York, Shawungunks (1)—In June, 1956 Bob Graef and Mary Syl- vander were climbing “Gaston.” While leading the top pitch of “Gaston,” a practice climb, Bob lost consciousness due to heat and fell 20 to 30 feet. He was held by Mary but he suffered a concussion and Mary had rope burns of both hands.

Source: Hans Kraus.

Analysis: Heat prostration.