The marsh is a transition zone from the land to the sea, acting as a buffer between the land s freshwater and the ocean s saltwater. The John Elwyn Stone - Forestry Learning Center is the site for most programs and seminars. It houses a large conference room that seats approximately 100 people classroom style, has audio-visual equipment, a small kitchenette, a smaller meeting room, and restrooms. Posters, photographic displays, and other natural resource information is often on display here. Rosemary Cottage is located near the Historic Cape and is used as an outdoor classroom with a greenhouse.
All buildings are handicap accessible.
From the Circle, take Route 1 Bypass south. This will merge into Route 1 South. Proceed about 2 miles thru a series of five lights. Turn left onto Elwyn Road. Move into the far left lane to the Portsmouth Traffic Circle.