Dark Fantasy.

The Mouth of the Leviathan is a colossal, half-buried skull of an ancient creature, its massive jaw gaping open to reveal a hidden ecosystem within. Glowing mushrooms illuminate the dark interior, while strange, blind creatures scuttle about, thriving on the bone dust and the ambient death energy that permeates the air. This eerie sanctuary offers temporary refuge from the harsh wasteland, but adventurers must tread carefully, as the local inhabitants are fiercely territorial and the environment is fraught with peril.

The skull is weathered and cracked, with sand and debris partially obscuring its features. Inside, bioluminescent fungi cast an otherworldly glow, and the air is thick with the scent of decay and mystery.