A new study published in Nature proposes the first true evidence of an "accessible cave conduit" on the Moon, located beneath the Mare Tranquillitatis pit. A future...
"Permanent lunar colonies could soon become an attainable target for space agencies"
This is great even from the standpoint of wanting to go to Mars since it means setting up camp in a cave is now possible to try out much closer to home first. Kinda like sleeping in a tent in your backyard first. Makes the moon that much more exciting to know there's caves too.
“Lunar cave systems have been proposed as great places to site future crewed bases, as the thick cave ceiling of rock is ideal to protect people and infrastructure from the wildly varying day-night lunar surface temperature variations and to block high energy radiation which bathes the lunar surface,” said Katherine Joy, professor in earth sciences at the University of Manchester. “However, we currently know very little about the underground structures below these pit entrances.”
I mean, lunar water exists...they just have to figure out if it flows when the moon faces the sun for 14 days at a time and gathers in these lava tunnels or stays in the form of beads