[SunkenCiv]

It was also interesting that, from the way the text reads, that the human remains were under basalt. That could mean volcanic activity, or it could mean that basaltic debris later covered the remains through erosion or whatnot.

[colorado tanker]

The basalt is broken up. Hard to imagine this place with soil and crops.

Sort of like one of those Star Trek away teams that visits a once fertile planet that desertified.