A classic, oldschool Doom 2 map. I got inspired to create this after watching the IGN 90 minutes video of cooperative game of Doom Episode 1 with John Romero. If you watched that video the map name should make more sense.
This is a base themed level with about 240 monsters on UV and provides and it provides around 15 minutes of gameplay. If you want to play this in a newschool source-port I recommend disabling crouching, jumping and freelook, but that's up to you.