As long as my challenge is "modern and man-made" I thought I would post this one too. I told youngest it's a bit of a game to find people on their cell phones. I almost got one with a cowboy wrestling a calf at the spring branding with the cell phone at his ear, but the caIf shifted and the cell phone went to the ground. Anyway, I liked how the pilot came out and made a call just after he landed.
Mary @mcsiegle Another for your consideration. I will look for architecture as the week goes on, but, like I said, it's likely to be silos or some such. I wonder if cell phone towers are photogenic?
The cell phone is a great addition for the challenge. I think I like the other shot better, but both are wonderful answers to the challenge. Boy, you really have jumped feet first into that. I'd better get going on the challenge you gave me.