The Flint Hills is a region in eastern Kansas and a small part of northern Oklahoma, known for its rolling hills and tallgrass prairie. This area is characterized by its unique limestone outcrops and rich biodiversity, making it one of the last remaining expanses of tallgrass prairie in North America. The region is primarily used for cattle ranching and is home to various wildlife species. The Flint Hills is also significant for its cultural heritage, with many historic sites and Native American history. The Tallgrass Prairie National Preserve is located here, protecting the natural landscape and providing opportunities for outdoor activities like hiking and birdwatching.