We left Pierre and drove through the prairies of South Dakota towards Mt Rushmore.
Through the bus window it was green rolling plains for as far as you could see.
Suddenly there were sandstone spires, castles and walls rising up out of the prairies.
We went for a short hike through the area it was like a moonscape.
............looking over the edge and admiring the unusual scenery.
It reminded us a little of the Bungle Bungle ranges in the Kimberly area of north west Australia, which also has the different coloured layers.
Map of our trip, click to make larger