I was messin around with photoshop last night and made up a brand new rock tile I'll prolly use in COTN for "The world of Cinders". Yup, prolly gonna get a completely new tileset!
I think it would look even better with a molten rock comming from one of the mountains (say, lava?) and a few cracks in the ground. Or just replace the sky with standard Lordareon Summer sky. Good jub, though...