Great RV Adventures Every year, thousands of travelers hit the highways in South Dakota for the ultimate RV getaway. Before cruising your home-on-wheels across state lines, please review the following safety tips and information on road grades and tunnels. Explore RV camping sites throughout South Dakota Steep Grades Grades throughout the Black Hills can be steep. Large vehicles, such as vans, RVs and those pulling trailers may experience overheating or transmission problems if drivers aren’t prepared. We recommend using first or second gear when driving up or down long, vertical grades, and using brakes sparingly. Please watch your extension mirrors while going through tunnels. Badlands National Park Tunnel Locations Name Scovel Johnson Tunnel C.C. Gideon Tunnel Doane Robinson Tunnel Miner’s Gateway Tunnel Iron Creek Tunnel Needles Eye Tunnel Hood Tunnel Route US Highway 16A US Highway 16A US Highway 16A US Highway 16A SD Highway 87 SD Highway 87 SD Highway 87 Location 6.5 miles south of Keystone 4 miles south of Keystone 3 miles south of Keystone 1 mile north of Keystone 6 miles southeast of Sylvan Lake 2 miles southeast of Sylvan Lake 1 mile north of Sylvan Lake Width 10'9" 11'6" 12' 41'10" 8'9" 8' 8'9" Height 11' 10'9" 11'4" 15'8" 10'10" 9'9" 9'8"
South Dakota Scenic Drives Guide South Dakota Scenic Drives '24: Page 39
