re: collapsed lava tubes.
There is a constant micrometeorite bombing on the Moon, which has rounded mountains over the ages. This is why it is very unlikely we'll find intact tubes.
Space/Science » in reply to Similar features on the Moon have been identified as old collapsed lava tubes.
There is a constant micrometeorite bombing on the Moon, which has rounded mountains over the ages. This is why it is very unlikely we'll find intact tubes.