man in cave
Indian Tunnel. Some of the lava tubes are like vast, empty subway tunnels.

Dave Clark

The Craters of the Moon landscape is more than just surface volcanic features. Below ground there is a dynamic underworld where fiery rivers in hardened, self-insulating tubes once flowed for miles without losing heat. Caves like Indian Tunnel offer the opportunity to drop beneath the crust and explore the interior of a lava flow.

Wear sturdy close-toed shoes, bring a flashlight, water and obtain a cave permit before entering any caves.