• The setting sun over the Flint Hills casts shadows across the wide expanse of tallgrass prairie.

    Tallgrass Prairie

    National Preserve Kansas

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  • Recent Aggressive Bison Behavior

    Bison have recently exhibited some aggressive behavior. Hikers are alerted. Hiking is still available with alternate trails around Windmill Pasture. If hiking through the pasture, please stay at least 100 yards away from the bison or turn around. More »

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Did You Know?

Aerial photo of the Flint Hills at Tallgrass Prairie National Preserve

Kansas was once the bed of a vast inland sea. The unique, stairstep landscape of the Flint Hills was formed through a process of differential erosion. Erosion washed away the soft shale layers and left the tougher layers of limestone and flint to form the hilltops and prominent benches.