The Koimeterion is the graveyard that was crafted out of the south-western henge from the triangular complex. It's layout is that of a crypt in the middle -- the first structure in the area -- and graves literally spiralling out. Gravestones have been crafted out of makeshift wooden crosses, nameless markings for the dead. In former years, the bodies would be moved to the crypt after a certain amount of time, due to the room constraints. When, centuries ago now, a "demon" began to haunt the crypt, devouring the corpses, room constraints were no longer an issue.

Because of the fear of this "demon", the Koimeterion has become untended and overgrown with weeds that thrive in areas with decaying flesh. Many of the grave markers have rotted away, and have become smothered beneath weeds. It is mostly avoided.