Join Emma Treadwell Thacher Nature Center guides Anna and Grace for this one hour, 1 mile walk along the escarpment of Thacher Park. Learn about geology of the area, and the people who made Thacher Park what it is today. Please register, limited to 15 people. This tour is suitable for adults and seniors, with mild walking conditions. Subject to cancellation due to weather. Please park and meet us at the Thacher Park Visitor Center, located at 830 Thacher Park Rd, Voorheesville, NY 12186.