Clarence Gilmer, of the Ashokan Center, leads teenagers from Onteora High School, South Kortright Central School, and Margaretville Central School on a hike in Olivebridge on Tuesday. The activity was part of the 2011 Watershed Youth Symposium, an event held every year by GrowNYC, the Catskill Watershed Corporation, and the New York City Department of Environmental Protection. Later this spring, the teens who participated in this week's symposium will get their hands dirty by planting trees throughout the watershed region. Photo by Diane Galusha.
