As anyone who's taken pictures in drains knows, they're not very photogenic. one picture of a concrete tunnel fading into darkness is more or less interchangeable with any other. to combat this, I compiled the most interesting shots from several different drains.
2. does anyone know what this gunk is? it was forming under an smaller pipe that flowed into this one.
5. Most of this stuff looks like it's been around a while, i think the lack of fresh paint is related to the rise of screen-based entertainment.
Thanks for looking!