Deschutes National Forest · Oregon

Silica

0.5 mi of trail, end to end · about 30 ft of climbing · 60 ft of descent · 6,354 ft–6,410 ft · native material surface · trail No. 3958.5 · trail class 3 · typical grade trail_grade · tread 12-18 inches wide · hiking · seasonal: hiking 06/01-10/31

CampgroundsBoat launches

6,383 ft 6,354 ft · 0.5 mi high 6,410 ft

Along the way Little Crater Campground Little Crater Day Use Site Little Crater Boating Site

Trailhead Big Obsidian Flow Trailhead and Interpretive Site 6,381 ft Drive there

Hike this trail · Every trail in Deschutes National Forest

Other trails from the Big Obsidian Flow Trailhead and Interpretive Site

Hike this trailAll 432 trails in Deschutes 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.