The Flint Hills are a band of hills in eastern Kansas stretching into north-central Oklahoma, extending from Marshall County in the north to Chautauqua County, Kansas and Osage County, Oklahoma in the south.
Much of the Flint Hills are composed of limestone and shale. Beginning in the mid-1800s homesteaders replaced the American Indians in the Flint Hills. Due to chert in the soil, farming was not practical, and cattle ranching became the main agricultural activity in the region. Sparsely populated today, the Flint Hills contain most of the remaining tallgrass praire in the world and have some of the largest cattle ranches in Kansas and Oklahoma. There are three official tallgrass prairie preserves in the Flint Hills, the largest of which, the Tallgrass Praire Preserve, near Pawhuska, Oklahoma, also boasts one of the largest population of bison in Oklahoma. The other preserves, both located in Kansas, are the Tallgrass Praire National Preserve and the Konza Praire.
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