Experience the rich history of Hartley Park as we hike up to Rock Knob. Imagine what Hartley would have looked like and see what remains of the past. Be prepared to hike up hill and on uneven trails. HNC staff-led hikes meet at Hartley Nature Center. Cost: $5 Mbr, $8 Nonmbr; Kids are FREE! Call to pre-register: 724-6735.