Subway Cave & Lava Tubes Trail, Lassen National Forest, California
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Explore the underground world of a lava tube by taking the self-guided trail. Subway Cave & Lava Tubes Trail is approximately 1/3 mile long and the cave is completely dark, so don't your flashlights.
The floor is rough and jagged so best to wear sturdy shoes. The cave is usually 46 degrees F. Neither hardhats nor crawling is required! Pets are not allowed.
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