Is an obscure PDF, no longer available, containing a very entertaining dungeon filled with opportunities for climbing, swinging and yelling in a vast cavern filled with toppled templery and mosaic birds.
My Rom'Myr Dying Earth campaign was built around this adventure module as the start location. Firstly, because I think the adventure is hella-cool. I knew I wanted to run it as soon as I skimmed the plain text doc. The other is because my OSR Homebrew setting used the Thief class as the base character class. If you don't qualify for any of the other six classes you are a thief. And with thieves having a high Climb Walls ability, the only ability they can really exercise with some assurance of success, is a perfect match for the dungeon's interior environment.
The campaign has moved on from the starting location, obviously, in the last year and a half, but before more daylight appears between that glorious opening and the current campaign's direction I would like to honor this original freebie with my own illustration of the water-warped temple.