We saw this as we were leaving South Dakota.
It was such a beautiful sight. Dennis said we just had to have a shot of it. And it turned out so well.
We stayed in Sheridon Wyoming this night. We left South Dakota 2 days early. Not because we were bored. Far from it but it was just too hot for the kids with no a/c. No one was sleeping which meant we were not sleeping. SO we will plan a return trip next year.