U.S. Route 16A The route passes through Keystone, South Dakota; Mount Rushmore National Memorial; The Norbeck Wildlife Management Area and Black Elk Wilderness within the Black Hills National Forest; and Custer State Park (including State Game Lodge and Legion Lake); before rejoining the parent highway. US 16A is famous for its scenic, one-lane tunnels aligned to frame the faces on Mount Rushmore, its "pigtail bridges", and its sections of divided highway but with single (and narrow) lanes on each roadway. It is the only route which can be used to drive through Custer State Park without having to pay an entrance fee for
Mount Grace State Forest third tower to have been constructed on Mount Grace. Forest trails used for hiking, horseback riding, mountain biking, and cross-country skiing include a portion of the long-distance Metacomet-Monadnock Trail. The forest also offers picnicking and restricted hunting. Mount Grace State Forest Mount Grace State Forest is a publicly owned forest with recreational features located in the town of Warwick. The state forest centers around Mount Grace, which at is the third highest point in Massachusetts east of the Connecticut River after Mount Wachusett and Mount Watatic. It is bordered by portions of Warwick State Forest to the east and west