[h=2]Peter Norbeck Scenic Byway, Black Hills, South Dakota[/h] Named one of the most outstanding byways in America, the Peter Norbeck Scenic byway is 70 miles of scenic tunnels, hairpin turns, and pigtail bridges. Favorite sections like the Needles Highway and Iron Mountain Road will take you through some of the prettiest country west of the Missouri River. Smell the ponderosa pines, gape at two-billion-year-old monoliths and spires, and view Mount Rushmore from inside a rock tunnel roadway.