Happy 66^th Birthday to McConnell’s Mill State Park!! While you might just know the park for its picturesque views, adventurist hiking trails, and flowing waterfalls, come celebrate its birthday by learning the history of the Historical Gristmill and the Slippery Rock Gorge. First you will learn about the Ice Ages that changed this area, which made it possible to be the home for McConnell’s Mill. Then step into the shoes of its forefathers and see what life was like for them in the gristmill business. Lastly, as the milling operation came to a close find out how this land went from mill to park.