Demon Queen's Enclave (2008)

Demon Queen’s Enclave is a D&D adventure designed to take characters from 14th to 17th level. In this adventure, the heroes must unravel the plots of the vile minions of Lolth, the infamous Demon Queen of Spiders. Along the way, they’ll face off against drow, demons, and worse!

This adventure can be run as a stand-alone adventure or as Part Two of a three-part series of adventures (starting with P1 King of the Trollhaunt Warrens) that spans 10 levels of gameplay.

From the back of the adventure:

Long ago, the drow unwittingly built a small enclave above a subterranean realm where a corrupted finger of the Shadowfell touches the world. Once home to a vampire exarch of Orcus, this dead zone still contains unspeakable malevolence that seeks to create terrifying new soldiers for the Demon Prince of the Undead

Includes a 32 page guide that contains an adventure overview, new monsters and full-color illustrations of sights and scenes in the adventure; a 64 page encounter guide detailing the horrors of the Demon Queen's Enclave; and a double sided battle map