E1M2: The Dungeons (Heretic) - The Doom Wiki at DoomWiki.org
DOOM and the Level Design of John Romero: E1M2 – Lee's Existential Outlook
E1M2: Nuclear Plant (Wonderful Doom) - The Doom Wiki at DoomWiki.org
Doom E1M2 - Nuclear Plant in Map Releases - Page 1 of 1
What's with the off-map secrets in Rekkr? Wandered around forever in E1M2 before deciding to noclip way off map where I found some weird scarecrow things : r/Doom