NOTABLE DESCENTS Apocalypse Couloir, Prospectors Mtn. Grand Teton National Park WY 50s Classic: Middle Teton, East Face Glacier Route. Grand Teton Nat. Park WY 50s Classic: This Sickle Couloir, Horstmann Peak. Sawtooth Mountains ID Amor a Vida Couloir, South Teton. Grand Teton National Park WY Snake Couloir 2nd Descent. Grand Teton National Park WY