Crushed Stone, Dirt, Gravel
The Chesapeake & Ohio Canal National Historic Park (a.k.a. C&O Canal Towpath) follows the route of the Potomac River for 184.5 miles between Georgetown in Washington, D.C., and Cumberland, Maryland. Hundreds of original features, including locks, ...
Located in the northwest section of Washington, D.C., Rock Creek Park is the oldest and largest urban park in the national park system. Established in 1890, Rock Creek offers more than 1,700 acres of natural area for a variety of uses. Trails ...