The Forbidden Barrow

From the publishers blurb: This is a Forbidden Barrow, where a corrupt, assassinated King and his aides are entombed, sealed off such that the world may forget them. This dungeon is ideal for a starting adventure, where the players can be introduced to several OSR concepts without accidentally destroying the play world. Features 25 rooms densely packed with content ready to explore, with no preparation required of the DM.