Enter the megadungeon! When the mysterious Gauntlight, an eerie landlocked lighthouse, glows with baleful light, the people of Otari know something terrible is beginning. The towns newest heroes must venture into the ruins around the lighthouseand delve the dungeon levels far beneath itto discover the evil the Gauntlight heralds. Hideous monsters, deadly traps, and mysterious ghosts all await the heroes who dare to enter the sprawling megadungeon called the Abomination Vaults! Ruins of Gauntlight is a Pathfinder adventure for four 1st-level characters.