Great Salt Plains Lake is located in north-central Oklahoma, within the Great Salt Plains State Park. This unique lake is known for its high salinity, which is a result of the surrounding salt flats. The lake covers approximately 1,200 acres and is a popular destination for outdoor activities such as fishing, boating, and birdwatching. The lake is also famous for its unique crystal formations, particularly selenite crystals, which can be found along the shores. Visitors can dig for these crystals during specific seasons, making it a fun and educational experience for families and nature enthusiasts alike.