
Sorry for the dodgy resolution on that picture - I resized manually from 16:9 to 4:3, so it looks a little odd to me.
Anyway, the maps - much like The Mouth of Death, this here is a multi map (2 to be precise) Doom2.exe-styled ZDoom project (it'd probably be possible to play the maps in doom2.exe itself, but there's a few ZDoom specific lumps in the wad which might stop this). It's quite tough, and each map plays in it's own way, so the overall experience is varied, albeit short (probably 15 minutes for the two maps together at the very most).
Enough waffle, here's the links:
Webpage: http://www.phobus.servegame.com/doom/ph_dac.html
Download: http://www.phobus.servegame.com/doom/ph_dac2.zip
Enjoy
EDIT: Links Updated