This is a fleshed out adventure site intended for use with OD&D retro clones. Intended use is as a mega-dudgeon floor or a stand-alone location. The PDF can be printed in booklet format and used at the table. The release includes a hand-drawn map, an organized room key, ambiance feature descriptions, and treasure and monster reference tables.
Check it out here! https://glyph0s.itch.io/site-of-the-megalo