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Subway Cave Lava Tube

Subway Cave Lava Tube

Published on August 2, 2019 | in Blog, USDA - Forest Service By

  Subway Cave Lava Tube August 2, 2019   On the Northern border of Lassen National Park in the Lassen National Forest is the Subway Cave, a remnant of Northern California’s volcanic past.  Less than 20,000 yeas ago the lava of the Hat Creek flow was discharged in large volumes from a series of north-south […]

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