A great coastal abbey and the four-level dungeon delved beneath it, tied to Paizo's Shattered Star and set against a stark shore of pale sand and icy sea. The worked stone runs clean near the surface and grows rust-stained and corroded the deeper you go, branching out at the bottom into raw cavern.

The surface is the ruined abbey itself — pale flagstone halls open to the sky, littered with rubble and fallen timber, a blood-marked ritual area to one side, and a grand spiral stair at the heart leading down. Below, four dungeon levels descend in stages: tidy storerooms, workshops, and glowing blue fonts up top, giving way to prison rows, pillared halls, a round pit-room, and lava-marked vaults, until the deepest level opens westward onto a mossy cavern and a frozen underground pool.

Run it as one long vertical descent. The upper levels reward room-by-room clearing with plenty of doors and junctions to get turned around in; the lower depths trade tidy stonework for corroded halls and raw cave, where exposed crossings and cave mouths make a fitting climax. Pace the delve between cramped corridors and the few large open chambers.