Meet at 1:00 PM at Foss Farm parking area off rt. 225 just west of the Concord River bridge. Walk to Sudbury Valley Trustees’ Elliott Concord River Preserve, with views over the river, total distance about 3 miles. The walk will last about two hours. Be prepared for wet conditions underfoot, bring drinking water and insect repellent. Light refreshments will be served at the conclusion of the walk.