A catastrophic earthquake has ravaged the streets of Cadwallon! Now, rumors claim the passages that opened throughout the city lead down into catacombs containing the legendary wealth of Sophet Drahas, the King of Ashes. This expansion to Cadwallon: City of Thieves explores these catacombs with a new board, six adventures that can combine into a larger campaign, and a treasure trove of new characters, equipment, and Arcana.