Avalanche Lake is a 9-acre (3.6 ha) mountain lake located in the Adirondack High Peaks in New York. Avalanche Lake sits at 2,885 feet (879 m) between 4,714-foot (1,437 m) Mount Colden and 3,816-foot (1,163 m) Avalanche Mountain. The two mountains rise in vertical cliffs from the surface of the lake. Immediately west of Avalanche Mountain lies the MacIntyre Range: 5,115-foot (1,559 m) Algonquin Peak, 4,829-foot (1,472 m) Boundary Peak, 4,843-foot (1,476 m) Iroquois Peak and 4,380-foot (1,340 m) Mount Marshall. Mount Marcy is 2.5 miles (4.0 km) to the east. Avalanche Lake feeds Lake Colden to the south, in the Hudson River watershed. To the north, the trail to the lake from the Adirondak Loj surmounts Avalanche Pass, which is only slightly above lake level but separates it from the Lake Champlain watershed. Following the lake toward Lake Colden, the trail is choked with large boulders, and a number of wooden ladders have been built to make passage possible. There are also three places where the trail takes to wooden catwalks, first built in the 1920s, that are bolted directly into the cliff face. This section is known as the "Hitch-Up Matilda;" in 1868 when a mountain guide waded to carry one of his clients past a point with no footing on shore, her husband urged her to sit higher on his shoulders.