Explore the Hudson Valley’s rich and complex geologic history. It’s a great tale of transformation: land battered in tectonic plate collisions, submerged under the sea, later buried under a sheet of ice 2,000 feet thick. The cliffs, rolling hills, and rivers that we call home were sculpted by a billion years’ worth of landscape evolution, evidenced in rock formations at Westchester Wilderness Walk/Zofnass Family Preserve.

Day + Time: Saturday, September 26, 2026, 10am–1pm (Rain date: September 27)

Getting There + Parking: Park in the Upper Shad Road parking lot (41.175853, -73.599266). Carpooling is encouraged. There are no restrooms on site, please budget extra time if you need to stop on your way. Nearest available: Mobil 193 Pound Ridge Rd, Bedford, NY.

Accessibility: Approximately three miles round trip with plenty of stops for discussion and observation. The route will include steep inclines, bare rock, steps, stream crossings, and potentially muddy conditions.

Safety: Minors must be accompanied by a parent or guardian. Please bring a water bottle and wear sun protection, long pants, and closed-toed shoes. Pants tucked into your socks are recommended to avoid exposure to ticks and poison ivy.

Register here.