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 Mansfield State Forest is listed as a National Natural Landmark. Vermont Route 108 between Stowe Mountain Resort and Smugglers' Notch Resort is a federally designated Scenic By-way. Mount Mansfield State Forest Mount Mansfield State Forest covers in seven towns in Chittenden, Lamoille and Washington counties in Vermont. The towns are Bolton and Underhill in Chittenden County, Cambridge, Johnson, Morristown and Stowe in Lamoille County, and Waterbury in Washington County. Mt. Mansfield State Forest is the largest contiguous landholding owned by the Vermont Department of Forests, Parks and Recreation. There are four state parks located in the forest: Little River State Park, Smugglers' Notch