Blood Pool

Unsettling aura (ominous, cold, pitch black), pool
of fresh blood (15' wide, dripping from ceiling), skull
carvings (one on each wall, relief carved from rock),
steps (up 10', east).
The Xoth's (pg. 147) hive is here, attached to the
ceiling. It is a grotesque amalgamation of bones, flesh,
and scraps of wood.