A campaign setting for Basic D&D that appeared in some articles in Imagine magazine, TSR's UK office's official magazine, which mostly reprinted articles from the US Dragon magazine, but also included some new stuff.
The world is flat. Otherwise, it's pretty generic, if well defined. Fondly remembered by British neckbeards, all but unknown to the rest of the world. This guy hacked together a single document with all of the content and the two adventures.