Gizzard of the Bogswallow Titan

Deep in the flooded under-levels of the dungeon, the massive Bogswallow Titan finally falls into the foul muck. After a brief search of its distended gullet, the party discovers a collection of gear and jewels swallowed during the behemoth's previous raids on subterranean expeditions. While the owners are long gone, their hardier possessions remain intact within the monster's stomach, shielded from the acid by thick layers of undigested sediment.