Lower Slide Lake: Gros Ventre Slide Interpretive Trail Professional Review and Guide
"The Gros Ventre River, a tributary of the Snake River, winds into Jackson Hole through Antelope Flats, forming a portion of the southern boundary of Grand Teton National Park. On June 23, 1 925, a 2,000-foot avalanche from Sheep Mountain, on the south side of the river valley, blocked the canyon and formed a natural dam 225-feet high and a mile wide. The dam blocked the Gros Ventre River, creating Lower Slide Lake.
The three-mile-long lake covers over 1 ,1 00 acres and is now a popular recreation site. The Gros Ventre Slide Interpretive Trail is a 0.8-mile hike along a self-guided nature trail. The trail overlooks the largest natural landslide of historical record in North America. Informative signs along the trail discuss the geology and flora of the area."