Have you been to Blue Hole Park in Salina, OK? Located about 2 1/2 hours from OKC via the turnpike, you will find both shallow and deep beautiful ice-cold water! The hole itself is said to be about 17 feet deep. Its one of Oklahoma’s cleanest and clearest swimming holes. Need To Know Before You Go There are several things that you should know to be best prepared for you visit. Cost to enter is $10 per vehicle. No alcohol is allowed on premises. Dogs are welcome but must be leashed. The park gets packed. Arrive early for prime real estate options, the park opens at 9a. Take a cooler…