The Cursed Halls of Barad-Mor

From the introduction: This book contains a rather sizable dungeon complete with monsters and treasure meant to challenge a high level party of adventurers. ... The The Halls of Barad-Mor rest within the high mountain peaks of the Darkspine Range, so named because the mountains resemble a dark ridge of spines on the back of some titan beast. User summary: For 15th level characters.