U.S. Interior Highlands, Mountain range system in Central United States.
The U.S. Interior Highlands is a mountain range system in Central United States that stretches across Arkansas, Missouri, Oklahoma, and Kansas. The region features steep valleys, rolling hills, and diverse rock formations situated between the Appalachians and the Rocky Mountains.
Native American peoples such as the Osage and Quapaw inhabited the region for centuries, using natural resources for hunting and establishing communities. Settlers from the east later arrived and transformed the landscape, shaping what visitors see today.
The region holds numerous archaeological sites and three national forests that preserve traces of early inhabitants and settlers. Visitors today can explore these historical places and learn how people shaped this landscape over centuries.
Multiple state parks and conservation areas throughout the region offer hiking trails, camping grounds, and viewing points for watching wildlife. Visitors should prepare for changing weather and wear sturdy footwear when exploring the hillier terrain.
The region remained above water throughout its entire geological history, creating distinct ecological zones. This isolation allowed plant and animal species to develop that are found nowhere else in the world.
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