Hawthorn Pond Working together with the students at Tower School, the Conservancy extended the board walk in the Hawthorn Pond area. Doug Perkins teaches Tower School students how to build a boardwalk through the wetlands at Hawthorn Pond. Photo Courtesy of Denny Curtin. Bob and Doug planting trees donated by Dave and Sandy Cross. Ducks and turtles kept a watchful eye on all the work.