I'm really not too good at framing and capturing this kind of thing. I feel so much more comfortable working in macro. But I want to improve so I am trying to force myself to shoot things like this. Feedback is welcome. They've been color and contrast improved in Photoshop, and cropped, of course.
Each culvert had a line of stones somewhere along the length; apparently, when they were poured, the stones in the concrete all ran down to the bottom. Close up, they looked like cobbles.