More information: Leonardo Carrer et al, Radar evidence of an accessible cave conduit on the Moon below the Mare Tranquillitatis pit, Nature Astronomy (2024). DOI: 10.1038/s41550-024-02302-y ...
This is a spectacular high-Sun view of the Mare Tranquillitatis pit crater revealing boulders on an otherwise smooth floor. This image from LRO's Narrow Angle Camera is 400 meters (1,312 feet ...
The cave is said to be reachable from an open pit in the Mare Tranquillitatis (Sea of Tranquility). As it is accessible from the surface, it has made the spot a prime location to build a future ...