At 2.5 miles long, Ape Cave is the third longest lava tube in North America. Explore a chilly, pitch-black corridor deep beneath the forest floor of Mount St. Helens National Volcanic Monument. A short, paved trail leads to the entrance of the cave, where visitors must descend a series of staircases for self-exploration of the cavern. The 3/4 mile long Lower Cave is relatively easy and family-friendly; most visitors explore the Lower Cave in about an hour. For the more adventurous, the 1.5 mile…
Yes — Ape Cave Interpretive Site Ticket accepts reservations. Check the live availability calendar to see open dates and book.
See the map for Ape Cave Interpretive Site Ticket's exact location and directions.
Pick your dates on the availability calendar, then reserve through the official booking link. You can also set an alert and we'll notify you if a sold-out date opens up.