From publisher blurb:
Half a century ago the legendary mage Delekin reached his zenith but began a fall of monumental disaster. After being betrayed by his party the mage changed alignment and began a cruel tirade against the residents. He was finally taken down by the Lords of Evil and imprisoned in a tomb created to lure good adventurers to their death. Many have entered the unholy locale and none have returned. Whatever evil is present in the tomb is powerful, and most likely very wealthy. This adventure is one of the Original series i.e. an early work!
This adventure setting was designed for 1st/2nd Edition AD&D for the Filbar Campaign for a higher level group of adventurers. This adventure is easily adaptable to most any game and system. Save yourself some time and utilize it for a one shot adventure or a continuing campaign!