Custer Gallatin National Forest · Montana

Big Ice Cave

0.1 mi of trail, end to end · 60 ft of descent · 7,568 ft–7,636 ft · asphalt surface · trail No. 99 · trail class 4 · typical grade 12-20% · tread 18-24 inches wide · hiking · seasonal: hiking 06/01-09/30

Exhibits

7,626 ft 7,568 ft · 0.1 mi high 7,626 ft

Along the way Big Ice Cave Picnic Area and Interpretive Site

Begins at the forest's mile 0, 45.1619, -108.4013 - no trailhead mapped Drive to where the trail begins

Hike this trail · Every trail in Custer Gallatin National Forest

Hike this trailAll 817 trails in Custer Gallatin National ForestFind a trailForest on fs.usda.gov

About this trail's facts

The lines are the US Forest Service's National Forest System trails layer (public domain), read 2026-10-16 and simplified for the map; the length is the line's, end to end, and the class, surface, grade and tread width are the forest's own entries where it publishes them - a forest that publishes the centreline alone has none. The trailheads and the points along the way are the Service's recreation points, and the write-ups its own recarea text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the forest's own site before you go.