The full experience at Ape Cave includes the easy exploration of a spacious lava tube (Lower Cave), followed by more difficult travel through a smaller, longer, and more rugged lava tube (Upper Cave) to an exit. The return hike winds through shady forest and crusty lava formations.

After Dec. 1 Forest Road 8303 to the cave is gated at the Trail of Two Forests. Visitors walk about a mile to the cave.

Activity Notes

This is a multi-part hike activity, combining the "Mt. St. Helens Climbers Bivouac to Climber's Permit Zone" hike and the "Ape Cave" hike. Hikers must participate in both and register on the Mazamas' website.
Other Information
Driving Distance from Portland 71 miles
Driving Time from Portland 1 hours
Distance - Round Trip 5 miles
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