CleverRaven/Cataclysm-DDA — pull request #9350 by Mshock777 (2014-10-01 13:52:14+00:00)
Title: Dirt floor for craters

Silly me, some craters hid from me in necropolis mapgen. Now ash generates on dirt.
Also returned one dat.groundcover, which presumably will generate grass in spots, where is no rubble.