Immediately west of Avalanche Mountain (formerly known as Caribou Mountain) lies the MacIntyre Range— 5,115-foot (1,559 m) Algonquin Peak (the second highest mountain in the state), 4829-foot (1472 m) Boundary Peak, 4,843-foot (1,476 m) Iroquois Peak and 4,380-foot (1,335 m) Mount Marshall. Mount Marcy is 2.5 (4 km) miles to the east. Avalanche Lake feeds Lake Colden to the south, in the Hudson River watershed.