Upper entrance to Sentinel Cave one of hundreds of lava tube caves in Lava Beds National Memorial, California
Upper entrance to Sentinel Cave one of hundreds of lava tube caves in Lava Beds National Memorial, California
Size: 3744px × 5616px
Location: Lava Beds National Memorial, Tulelake, California, United States of America
Photo credit: © Jason O. Watson Photography / Alamy / Afripics
License: Licensed
Model Released: No
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