I lived up in N.Dakota for 10 years and went to Stugis every year and it was always the best riding a biker could dream for. We rodeSpearfish canyon everyday,rode out to Devils Tower and Mt. Rushmore. I always loved riding there and miss it now,but I don't miss cold weather,windchills and snow.
Your comment about the snow made me remember something about the trip I had forgotten. We drove a lot during the trip and were continually seeing the short stretches of unattached fences built in the pastures and fields along the highways. I figured it was to give the cattle and horses somewhere to get out of snow drifts. But I learned by asking that it was something the DOT folks do to keep snowdrifts from blocking the highways.
Reminder to self............. stay AWAY from the Dakotas in the winter