Driving through the Loess Hills

While the drive between Turin and Moorhead was quite attractive and photogenic, I didn't take one photo. I can't explain it. I was just driving along, enjoying the drive as we curved through the hills. Linda and I both recognized the "catstep" ledges common in these hills. We'd read about them at the nature center near Sioux City but hadn't really remembered having seen them on the hills. For those unfamiliar, there are ledges that ring many of the hills at fairly consistent intervals. I've now read a few explanations that they're caused by the constant slumping and vertical sheering of the loess soil, especially when it gets wet. To see nice photos of this area, click here.