Mournland
The Mournland is a region in the Eberron setting of Dungeons & Dragons. Once the kingdom of Cyre, it was annihilated by a magical blast of unknown origins and nature during the Last War; this fantasy nuke, known as the Mourning, ripped reality a couple of new assholes, and fucked over the entire continent, leaving it a blasted wasteland filled with mutant monsters, self-perpetuating spells, armies of renegade and hostile warforged and the undead, and generally completely unfit to live in. Especially since healing magic doesn't work here. The Mourning was such an unprecedented shock that it actually forced the nations of Khorvaire to declare a truce, and the Last War has ground to a stand-still... at least until they figure out if the Mourning could happen again and how it's triggered.