page_title: Ouachita Mountains
section_title: Geography
hierarchical_section_title: Ouachita Mountains / Geography
caption_attribution_description: English: Counties in red are on the Arkansas side of the Ouachita mountains, while counties in orange are on the Oklahoma side. The rest of the state of Arkansas is in pink, and the rest of the state of Oklahoma is in yellow. Due to the way the county borders are drawn, it may not be entirely accurate.
context_page_description: The Ouachita Mountains, simply referred to as the Ouachitas, are a mountain range in western Arkansas and southeastern Oklahoma. They are formed by a thick succession of highly deformed Paleozoic strata constituting the Ouachita Fold and Thrust Belt, one of the important orogenic belts of North America. The Ouachitas continue in the subsurface to the northeast where they make a poorly understood connection with the Appalachians and to the southwest where they join with the Marathon uplift area of West Texas. Together with the Ozark Plateaus, the Ouachitas form the U.S. Interior Highlands. The highest natural point is Mount Magazine at 2,753 feet.
context_section_description: The Ouachitas are a major physiographic province of Arkansas and Oklahoma and are generally grouped with the Arkansas River Valley. Together with the Ozark Plateaus, the Ouachitas form the U.S. Interior Highlands, one of few mountainous regions between the Appalachians and Rockies.
caption: A map of the Ouachita mountains within the states of Arkansas and Oklahoma.
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