Charon's Drowned Shrine

From publisher blurb: CHARON'S DROWNED SHRINE is a location supplement for Tier 2 gaming groups exploring the First Layer of Hell. Enter Orinxis, the Drowned City by the Styx, in this avernian adventure! Explore ruins, uncover mysteries lost and forgotten, battle ancient evils that lurk beneath the surface, and gain a way out of Hell!