That's some pothole

Actually it's the sinkhole at Angus Tower. I posted a picture of this sinkhole last year, but this angle is much better.  This whole area is pock-marked with these giant sinkholes.  They fenced this one off a few years back because buffalo (and people) had fallen in.

I guess they didn't think anyone was smart enough (or stupid enough) to just walk around to the other side.

 I'm not sure which one I qualify for, but it makes for a much nicer picture on the "unprotected" side.