Volcano Review
Volcano Review - Mount St. Helens National Volcanic Monument USFS Shield
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Volcano Review 2008

Ape Cave

Photograph From Inside Ape Cave

A view of inside Ape Cave. Forest Service photograph.

Discover the inside of an ancient lava flow at Ape Cave. Allow an hour to explore the lower section and two and a half hours to hike the more difficult upper portion of the cave.

Expect uneven terrain and a temperature of 42*F/6*C year round. Bring warm clothes, sturdy shoes, and two light sources per person. Pets are not allowed in the cave.

Between late June and Labor Day services available include ranger-led tours, lantern rentals, and a small book store. A Recreation Day Pass is required and available here.