Central Hills Loop (includes the Needles Highway) - By Hardrider

Rode this July 2019. No doubt that this is one of the best routes in the country. The vegetation, rock formations and wildlife on this ride are awesome. The tunnels are intriguing. If you are going in the right direction, you will see Mt. Rushmore as you exit 3 of the tunnels. The road fairly technical so it helps if you have a photographer riding two up so you can look at everything you missed.