From 9am until 1pm

At Meet at Grants parking lot, Glen

Join Tin Mountain for an on the ground look at the geologic history of the White Mountains, from tectonic plates to glaciers. Hike to the summit of Mount Willard for a view of the glacial U-shaped valley of Crawford Notch. Pack water, a lunch, and layers. The hike is 3.2 miles roundtrip and moderately strenuous. Call 447-6991 for reservations.