Welcome to Lava Beds National Monument
Lava tubes are formed when the surface of hot, spreading lava cools and hardens upon exposure to cold air. The lava inside is thus insulated and stays molten, flowing away to leave an empty tube of solidified lava. Nearly 400 such tubular caves have been found in the monument, and many more are expected to be discovered. Approximately two dozen are currently open for exploration by visitors.
On the south side of the park, the visitors center has free maps, activity books for kids, and information about the monument and its volcanic features and history.