DOOM 1 - CAVERN.WAD
Channel: DOOM WAD World
Date: 2022-10-06

called "Caverns of Hell" in the /idgames FTP.
https://www.doomworld.com/idgames/levels/doom/a-c/cavern
created by Eric Aamodt a.k.a. Infinity on June 17th, 1994.
from the .txt file included with the WAD:
"Upon your return to earth, you think that you are finally done with seeing creatures of Hell. You were wrong. The Caverns of Hell await you. No one knows what lurks in the darkness around the next corner. Enter at your own risk." ------------------------------------
discord: https://discord.gg/aUsWnqaePy