The Crater of Umeshti

From the inside: "This module is designed for characters of 3rd-5th level with a challenge rating of 3-4." From the cover: "In the millenia since the destruction of Umeshti, the gaping sink-hole at the center of the crater has been the source of much controversy and speculation. The gaping hole in that crater's center is infested with all manner of monstrous beast and twisted goblinoid. Few have returned from the deeps, but those who have bring tales of battle and carnage and of dangers beyond the pale. The Crater of Umeshti is a good old fashioned dungeon crawl."