This module contains background information, a large-scale referee's map with a matching partial map for players, referee's notes, special exploration and encounter pieces, a hex map detailing an enormous cavern area, a special temple map, encounter and map matrix keys, and additional sections pertaining to unique new creatures for use with this module and the game as a whole. A complete setting for play of ADVANCED DUNGEONS & DRAGONS is contained herein. This module can be played alone, as the final part of a series of three modules (with DESCENT INTO THE DEPTHS OF THE EARTH, D1 and SHRINE OF THE KUO-TOA, D2.), or as the sixth part of a continuing series of modules which form a special campaign scenario (DUNGEON MODULES G1, G2, G3, D1, D2, D3, and Q1, QUEEN OF THE DEMONWEB PITS, soon to be released).