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.
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2. does anyone know what this gunk is? it was forming under an smaller pipe that flowed into this one.
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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.
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Thanks for looking!