A staircase comes through a break in the lava tube's ceiling, making an easy entrance for visitors who enter Indian Tunnel.

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A staircase comes through one of the breaks in the lava tube's ceiling, making an easy entrance for visitors who enter 800-foot-long Indian Tunnel. Craters of the Moon National Monument, ID.

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Size: 5200px × 3467px
Location: Craters of the Moon National Monument, ID.
Photo credit: © Craig Larcom / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: basalt, environment, eruption, flow great, geology, harsh, lava, magma, molten, plain, rift snake, river, rock, rugged igneous flood, tube, volcanic