Jennings Env. Ed. Center (PA DCNR)The Jennings Environmental Education Center is part of the Pennsylvania State Park Center located in Butler County, PA near Slippery Rock, PA.Organization Website: https://www.dcnr.pa.gov/StateParks/FindAPark/JenningsEnvironmentalEducationCent… Organization Email: [email protected] Slippery Rock, Pennsylvania County: Phone: Return to Project | Edit | Delete |