The ceiling lights and the wall texture remind me of MAP24: The Chasm Not sure about the exact angle though.
That was my first thought, too, but no, not enough texture variation.
The gold pipes seem to be on top of a gray pillar, there's a black or dark brown wall to the left, some copper computer circuitry on the far right, a low ceiling with round lights (sorry, I can't remember the names of the textures), and the player seems to be on a staircase. The player is also using a pistol and has no armor, which makes me thing it's at the beginning of a level.
The gold pipes seem to be on top of a gray pillar, there's a black or dark brown wall to the left, some copper computer circuitry on the far right, a low ceiling with round lights (sorry, I can't remember the names of the textures), and the player seems to be on a staircase. The player is also using a pistol and has no armor, which makes me thing it's at the beginning of a level.
I think I found the angle:
The image on Elegg's chest is rendered in widescreen which threw me off. It allows for some unique views as opposed to 4:3 Note that the corridor to the right has a Imp spawnpoint which makes sense in the context of the screenshot.
