Mount Adams, Southwest Chute. On the southwest side of Mount Adams, between the Avalanche Glacier and the regular south-side climbing route, lies a shallow gulley called the Southwest Chute. In years long past, this was a finger of the Avalanche Glacier, as evidenced by the terminal moraine at its foot. The chute climbs steeply to the west of the false summit, and because of unstable rock, is best climbed in early summer when filled with snow. What is believed to be the first ascent of the Southwest Chute was accomplished June 20, by a party of Cascadians consisting of Tom Hargis, Jr., Charles Lyon, and Sean Maxwell. Total climbing time was 6 hours of which 4½ were needed for the chute.