Delaware Water Gap National Recreation Area is a 70,000-acre (28,000 ha) national recreation area administered by the National Park Service in northwest New Jersey and northeast Pennsylvania. It is centered around a 40-mile (64 km) stretch of the Delaware River designated the Middle Delaware National Scenic River. At the area's southern end lays the Delaware Water Gap, a dramatic mountain pass where the river cuts between Blue Mountain and Kittatinny Mountain There are recent efforts to re-designate the area as a national park, the first in New Jersey or Pennsylvania.