Gifford Pinchot National Forest · Washington
Trailhead Trailhead: Ape Canyon Drive there
$5/vehicle/day or valid <a href="http://www.fs.usda.gov/main/giffordpinchot/passes-permits/recreation">Recreation Pass</a>. See <a href="http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprd3843447.pdf">Mount St. Helens Map</a> for fee and payment sites.
A small parking area provides access to Ape Canyon Trail #234.
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.