In case you were uncertain, this is a serious corridor. Check out the construction meshes.
This will show you some texture variations.
I find the deeply grooved corridor ceiling compelling. It's obvious it held lights at one time though now it doesn't. But it does contain quite a few species of DysArc denizens (DADs )which I hope I can show you soon.

 

Bridge World corridor

The blue there on the left, blue light actually, marks the niche. It's just a niche, like you'd think might hold a mop or a circuit board . I looked in and found a niche containing a casket. And the casket contains the entire Bridge World.

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