From the publishers blurb: A classic dungeon module for at least three adventurers of 1st to 3rd level! Pillage the Halls of the Bonelord, an ancient king who's name has been lost to time. This product includes a printer friendly map, some notes from the author, and details for each room within the Halls. The dungeon itself spans 20 rooms, and has a handful of secrets and twists. This content is compatible with most d20 systems, and has been written with "old school" fantasy gaming rules in mind.