The river of rocks. Share Post Pinterest Share Email Copy Print Whatsapp reddit Messenger McConnells Mill State Park, in Lawrence County, encompasses 2,546 acres of the spectacular Slippery Rock Creek Gorge, which is a National Natural Landmark. Continue Reading Previous: Explore McConnells Mill State Park. Take in virtual 360 photos. Leave a ReplyYour email address will not be published. Required fields are marked *Comment * Name Email Website Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.