Brutal Doom: Doom 2 Reloaded - Map 13 - Slime Falls

The chaos of the conflict probably caused the road to cave in. The only way forward is down through the slime. There should be a pumping station nearby so you should be able to access the road from it.

Map: Doom 2 Reloaded - 13 - Slime Falls
Source Port: Zandronum 3.1 with Brutal Doom v21
Difficulty: Ultra Violence

Where do I get these maps? Link provided below: https://www.doomworld.com/idgames/levels/doom2/megawads/d2reload