Ouachita Mountains

Ouachita Mountains, range of east-west ridges between the Arkansas and Red rivers, extending c.200 mi (320 km) from central Ark. into SE Okla. Magazine Mt. (c.2,800 ft/850 m high) is the tallest peak. The Ouachita Mts. are geologically considered outlier of the Appalachian Mts. They are composed of strongly folded and faulted sedimentary rocks. A whetstone industry is near Hot Springs, Ark. Mineral springs, lakes, and extensive wooded areas attract tourists. Several parts of the region have been set aside as public parks or forest reservations.

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Ouachita Mountains 

a mountain massif in the central USA, in the states of Oklahoma and Arkansas. The Ouachita Mountains represent a series of parallel ridges, with elevations reaching 884 m, composed of limestones and sandstones. The slopes are covered by broadleaf and coniferous forests. Coal, bauxite, and barite are mined in the area. The resort of Hot Springs is located in the mountains.