The Delaware & Lehigh Canal National and State Heritage Corridor (D&L) is a 165-mile (266 km) National Heritage Area in eastern Pennsylvania in the United States. It stretches from north to south, across five counties and over one hundred municipalities. It follows the historic routes of the Lehigh and Susquehanna Railroad, Lehigh Valley Railroad, the Lehigh Navigation, Lehigh Canal, and the Delaware Canal, from Bristol (northeast of Philadelphia) to Wilkes-Barre in the northeastern part of the state. The backbone of the Corridor is the 165-mile (266 km) D&L Trail. The Corridor's mission is to preserve heritage and conserve green space for public use in Bucks, Northampton, Lehigh, Carbon, and Luzerne counties in Pennsylvania. It also operates Hugh Moore Historical Park & Museums, which inc