Hike up to Stony Ledge in the Mount Greylock State Reservation via the Haley Farm Trail in Williamstown and descend via the Hopper Trail. The hike is a strenuous 3+ hours. Water, snack and sturdy shoes or boots recommended. Meet at the parking lot at the end of Hopper Road (off of Green River Rd. ) in Williamstown at 9:00 a.m. Severe weather cancels.