Delaware Water Gap

Delaware Water Gap, gorge, northeastern United States, carved by the Delaware River through the Kittatinny Mountains (a ridge of the Appalachian Mountains system), between Pennsylvania and New Jersey. The gorge, 3 km (2 mi) long, is flanked on the western, or Pennsylvania, side by Mount Minsi and on the eastern, or New Jersey, side by Mount Tammany. Both cliffs rise to 370 m (1,200 ft) above the river.

The gorge ranks among the scenic wonders of the United States. In 1965 it was designated part of Delaware Water Gap National Recreation Area. The gorge also has a long cultural history; Native Americans first lived in the river valley about 8000 bc. Area, 27,009 hectares (66,740 acres).