Radar evidence of an accessible cave conduit on the Moon below the Mare Tranquillitatis pit - Nature Astronomy A void tens of metres in size below the Mare Tranquillitatis pit on the Moon is revealed by radar images from the Lunar Reconnaissance Orbiter. This finding implies that lava tubes or conduits are pos...

In the future, there is going to be a Wikipedia disambiguation page for the term "Tranquility base". 😉 #lunarcave #natureastronomy