Great Salt Plains State Park is located in north-central Oklahoma, covering over 8,000 acres. The park is known for its unique salt flats, which are remnants of an ancient sea. Visitors can explore the area through hiking trails and enjoy activities like birdwatching and fishing in the nearby Great Salt Plains Lake. One of the park's highlights is the opportunity to dig for crystal treasures, specifically selenite crystals, which can be found in the salt flats. The park also offers camping facilities, making it a popular destination for families and outdoor enthusiasts looking to experience its natural beauty.