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Boyd Cave

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description Boyd Cave Overview

Boyd Cave is an unlit lava tube situated in the Deschutes National Forest of Oregon, located within the Newberry National Volcanic Monument. The cave was formed by pahoehoe basalt lava flows that left behind a subterranean tunnel as the surface cooled and hardened. It is distinguished by its accessible, unguided exploration opportunities, allowing visitors to experience unique volcanic features without artificial lighting. The cave is managed as public land and requires visitors to bring their own light sources.

help Boyd Cave FAQ

Where is Boyd Cave located?

Boyd Cave is in Deschutes National Forest within Newberry National Volcanic Monument in Oregon. It is a lava tube formed by pahoehoe basalt flows.

Why is Boyd Cave completely dark inside?

Boyd Cave is an unlit lava tube, so its interior does not receive natural daylight. The tunnel formed after the outer surface of a basalt flow cooled and hardened around still-moving lava.

What type of volcanic rock formed Boyd Cave?

The cave formed from pahoehoe basalt, a relatively smooth, fluid lava type. As the surface cooled first, molten lava continued moving beneath it and left a tunnel behind.

Is Boyd Cave part of Newberry National Volcanic Monument?

Yes, Boyd Cave lies within Newberry National Volcanic Monument in central Oregon. The monument protects volcanic features associated with the Newberry volcanic area.

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