Delaware Water Gap, scenic gorge, 2 mi (3.2 km) long, cut by the Delaware River through Kittatinny Mt., on the N.J.-Pa. line; located in a mountain resort area around Stroudsburg, Pa. The gap, parts of wooded Kittatinny Mt., several islands, and c.40 mi (64 km) of river bank (the Delaware National Scenic River) are included in Delaware Water Gap National Recreation Area (see National Parks and Monuments, table).