As a member of a bold party of adventurers, you and your associates have trekked far into what seems to be a whole underworld of subterranean tunnels -- arteries connecting endless caves and caverns which honeycomb the foundations of the lands beneath the sun. Your expedition has dogged the heels of the Dark Elves who caused great woe and then fled underground. This module can be played alone, as the conclusion to module D1 & D2: "Descent into the Depths of the Earth," or as the third module in a series that forms a special extended adventure (G1-G3: "Against the Giants"; D1-D2: "Descent into the Depths"; and Q1: "Queen of the Demonweb Pits"). TSR 9021

How different things seem now from when you undertook the crushing of a few rebellious hill giants! What seemed a simple adventure has turned into a major expedition. Much time has passed since you discovered the conspiracy that led you to the frost giants, fire giants, and eventually to the long-forgotten Drow. Through your encounter with the dark elves, you have found the true source of the evil -- the demon queen Lolth! This module is the exciting conclusion of a series of seven AD&D modules. It may be played on its own or as the climax of the "Giant" series (G1-G3) and the 'Drow' series (D1-D3). The first of a new series of other-planar adventures, this module includes several new monsters, maps of the Demonweb and lair of Lolth, and notes on eight alternate worlds, suitable for expansion and addition to existing AD&D campaigns. TSR 9035