I remember an enjoyable paddle down the Niobrara, walking up to the waterfall and seeing the wildlife sanctuary some years ago, nice country. Driving through the sandhills the thought kept occuring to me how easy it must have been in earlier times to have become disoriented there. I'm used to being able to climb a hill and spotting some landmark in the distance. It made me appreciate the necessity of soddies and dugouts. What kind of mill did you get?