Washington and Old Dominion Railroad Regional Park
The Washington and Old Dominion Railroad Regional Park is a linear regional park in Northern Virginia. The park's primary feature is the Washington and Old Dominion Railroad Trail (abbreviated as W&OD Trail), an asphalt-surfaced paved rail trail that runs through densely populated urban and suburban communities as well as through rural areas.
Source: Wikipedia — Washington and Old Dominion Railroad Regional Park (CC BY-SA 4.0)