First time to Mt. Rushmore and we had a tour booked via Grayline to visit the major sites in the Black Hills. And what a great expereince, our tour guide, Trisha, was knowledgable, kept up good conversation, very good humor and helped us learn new things for each place she took us too. We had enough time to take pictures, get food, see shows and was always there with the bus when it was time to head on out. So thank you Grayline tours for have a great bus driver and overall good person.