description Boulevard Cave Overview
Found in California's Lava Beds National Monument, Boulevard Cave is a short, single-passage lava tube noted for its wide, level floor that resembles a subterranean boulevard.
help Boulevard Cave FAQ
Where is Boulevard Cave located?
Boulevard Cave is in Lava Beds National Monument in California. It is a short lava tube with a single main passage.
Why is Boulevard Cave called Boulevard Cave?
Its floor is relatively wide and level compared with many rough lava tubes. That shape resembles an underground boulevard, which explains the name.
What formed Boulevard Cave?
The cave formed when basaltic lava flowed and the outer surface cooled while molten lava continued moving below. When the flow drained, it left a tube-shaped passage.
Is Boulevard Cave a long multi-level cave?
No, it is described as a short, single-passage lava tube. Its notable feature is the broad floor rather than a complex network of levels.
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