A colossal ancient tree rises from the murk, its gnarled roots tangled like a fortress of wood and moss. Partially submerged in the swamp, the tree's massive trunk leans slightly, and beneath its roots yawns a dark, hollow opening, just wide enough for someone or something to slip through. The air is filled with the stench of rot and age, and the water around the tree stirs faintly, as if the swamp itself breathes with the slumber of something old and forgotten...