🇺🇸South Dakota

It occupies the territory of the Rocky Mountains, the Great Plains, as well as some part of the Mississippi River basin, which caused an extremely diverse relief and picturesque districts. 

This is truly an American province, where there are practically no large cities. 

The most famous natural massif of the region is the Black Hills, which from time immemorial have been considered shrines for all Indian tribes living on the territory of the Great Plains.
https://earth.google.com/web/search/South+Dakota