One alternative/something that can be used in conjunction is sealing/building in “lava tubes”. We have already confirmed that there are some that are quite larg

One alternative/something that can be used in conjunction is sealing/building in “lava tubes”. We have already confirmed that there are some that are quite large: https://www.nbcnews.com/mach/science/gigantic-lava-tube-could-be-home-moon-colonists-ncna813396 https://www.nbcnews.com/mach/science/gigantic-lava-tube-coul... I think something around this approach is the way to go.