Just outside of Deadwood, SD, is Rush Mountain Adventure Park which is home to Rushmore Mountain Coaster
You start with a long relaxing climb to the top
The climb can be steep at times
Here is one of the steeper parts of the climb
Almost to the top
Once you are at the top, it is a traditional "straight down" course filled with curves and a few helices.
Here is one of the helices, and yes you do get some G-force pulling on you
The last helix above the station area.
Overall we found the ride to be quite fun. Basically a mid-tier mountain coaster