Ape Cave Lava Tube

The Ape Cave Lava Tube, located in the USA, stretches for 2.5 miles, forming the longest continuous lava tube in the country and the third-longest in North America. Comprising two tubes, the upper is the largest, while the lower offers a more accessible route for exploration. The area also provides a striking view of nearby Mount St. Helens. Visitors can venture into the dark, cool tunnels, experiencing the unique geological formations and the eerie silence within the ancient lava flows.