Gap, city (1990 pop. 35,647), capital of Hautes-Alpes dept., SE France, on the Luye River at the foot of the Dauphiné Alps. A center for tourism, Gap is an agricultural market that manufactures clothing, wood products, and construction materials. Founded by Augustus c.14 B.C., it was the capital of medieval Gapençais, which was annexed to the crown of France in 1512. The city was devastated during the Wars of Religion (16th cent.).

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).

Cumberland Gap, natural passage through the Cumberland Mts., near the point where Virginia, Kentucky, and Tennessee meet. The gap was formed by the erosive action of a stream that once flowed there. It was explored and named in 1750 by Dr. Thomas Walker, leader of a land company exploration party. Daniel Boone's Wilderness Road ran through the gap. A strategic point in the Civil War, the gap was held alternately by Confederate and Union forces. Cumberland Gap National Historical Park was established in 1940 (see National Parks and Monuments, table).