The Olde Abby Dungeon

From the introduction:

The ways and means that a party of adventurers arrive here are varied. The average group usually begins in a nearby village or perhaps a city; having decided to stay the night at an inn, the party settles down for an evening of rest and relaxation. Seldom, however, is this the case in an adventure! For around midnight, a sound and commotion from outside the adventurers' doors rouses them all, to find (if they decide to investigate) a raging battle, between a group of elf-like humanoids and several strange, cat-like humanoids, wielding exotic, curved blades.

User summary:

The scenario, self-described as a "puzzle dungeon", is distributed in a ZIP archive with the ASCII scenario and four GIF (map) files.