About this place
The third-longest lava tube in the contiguous United States — 2.5 miles of continuous passage beneath the southern flank of Mount St. Helens, formed when an eruption 2,000 years ago sent a sheet of basalt flowing downhill and crusted over into a tube
State
Washington
More details
Nearby (≈ 5 miles)
Quick hits within ~8 km.
Sno-Park: Cougar trailhead • 1 km Ape Cave Upper Entrance feature • 1.7 km Swift Creek Falls feature • 2.8 km RED ROCK PASS TH trailhead • 4.2 km CLIMBERS BIVOUAC TH trailhead • 4.7 km Climbers Bivouac Trailhead trailhead • 4.7 km JUNE LAKE TH trailhead • 5.3 km Chocolate Falls feature • 6.1 km Ole Creek Falls feature • 7.5 km