• 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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  • Reminder, Bison Are Wild Animals

    Windmill Pasture is home to the bison herd. They have been quite active in recent weeks. Please stay on the trails and use caution in their vicinity. Do not come in close contact with the bison. Allow at least 100 yards between you and the herd. More »

Last Stand of the Tallgrass Prairie

Where's the tall grass?

Tallgrass prairie once covered 170 million acres of North America. Within a generation the vast majority was developed and plowed under. Today less than 4% remains, mostly here in the Kansas Flint Hills. The preserve protects a nationally significant remnant of the once vast tallgrass prairie and its cultural resources. Here the tallgrass prairie takes its last stand.

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.