Hike to Hang Glider Cliff at Thacher Park. Take a guided hike to the escarpment in the north zone of the park and learn about the interesting geology of the landscape along the way. Call 518-872-0800 to register. Meet at the Carrick Road parking area, 6:00 p.m. At Thacher Park,87 Nature Center Way, Voorheesville, NY. Meet at the Carrick Road parking area.