Talk:Chasm/@comment-4583259-20111123152058/@comment-4501235-20111124091747

I agree, they probably aren't generated in new moons anymore, but astronaut lairs were also present in the game while chasms were. So, it wasn't that they switched one for the other. They were actually fairly common prior to the update. I fell into a few while exploring. I still have one of those moons saved.