The Holy Terror Mini Golf course is nestled on the side of a pine-covered slope in Keystone. Named after the last active gold mine in Keystone, the course will have you “screamin’ mulligans” as you putt around gold-flecked boulders, up steep hills, down through the mine sluice and around the waterwheel and bubbling stream. The 18 holes meander more than 50 feet up a steep hillside and back down. Find us next to the National Presidential Wax Museum.