Mordor

"The gasping pools were chocked with ash and crawling mud, sticky white and gray, as if the mountains had vomited the filth of their entrails upon the lands about. High mounds of crushed and powered rock, great cones of earth fire-blasted and poison-stained, stood like an obscene graveyard in endless rows, slowly revealed in a reluctant light." Lord of the Rings, Two Towers. You captured this beautifully.