If you want a good look at the South Dakota landscape, that movie "Dances With Wolves" has a lot of panoramic views of the beautiful rolling hills and wide open vistas there.

I saw that on a super big screen when it first came out, a giant old fashioned theater that was torn down shortly thereafter (the Mann Theater in Minneapolis).

I was proud to be a Minnesota neighbor to the beautiful landscape of South Dakota. And there are even prettier parts than what was in the movie.

Also I have seen a movie that was shot in Mongolia with many wide angle open landscape shots and thought the topography and vegetation of Mongolia was very very similar to the South Dakota landscape as seen in Dances With Wolves.