The Black Mud Swamp is a swampy area near the Lake Roccaluce when going in the direction of Cloud Tower, where the water nymphs live, in the water lilies. The area is often used by Alfea and Red Fountain as a field exercise area. The swamp is home to many exotic species of magical plants and animals, as well as the Kingdom of Undines, sub-tarrainian slug and the quietous carnivorous.