-
A Lunar Cavern
Collapse pits, where the near-surface lunar crust has caved in, can provide a window into the shallow subsurface. They are somehow related to the volcanic plumbing system that lava moved through when it flooded the mare basins early in the Moon's history. Could they be openings into a system of hollow lava tubes? These images, taken at different times, reveal that a cave extends at least 25 meters (82 feet) under the surface here. Arrows connect the same features.Image IDs: M126710873R, M155016845R, M152662021R
Camera: NAC
Image width: 200 m (660 ft.)
