A lava skylight
By Astrogeology Science Center
January 1990 (approx.)
Detailed Description
Photo of an unusual lava skylight. There are photogenic toes of pahoehoe lava frozen around the sides of the skylight that are from a lava flow that moved across the skylight and sent lava cascading back into the tube.
Sources/Usage
Public Domain.
Photo was taken by Laszlo Kestay at USGS Astrogeology Science Center.