ADDISON — The managers of the Chimney Point, Vt., and Crown Point, N.Y., state historic sites will host a guided walk on Sunday, July 28, at 1 p.m., leaving from the Crown Point State Historic Site museum. Walkers should allow at least two hours. Walk leaders Tom Hughes and Elsa Gilbertson will take participants across and back on the bridge, and will show them the 9,000 years of human history at this important and beautiful location on Lake Champlain. 
The fee is $6 for adults, free for children younger than 15, and includes admission to the Chimney Point and Crown Point museums. People should consider wearing a hat and bringing water, a camera, and binoculars to bring the Green and Adirondack mountains up close. At the museums, visitors can see the Chimney Point special exhibit highlighting the archaeological findings from the bridge project and experience the exciting multi-media presentation at Crown Point.
At this narrow passage on Lake Champlain humans have crossed here, as well as traveled north and south on the lake since glacial waters receded over 9,000 years ago. The channel with its peninsulas, or points, on each side made this one of the most strategic spots on Lake Champlain for the Native Americans, and French, British, and early Americans in the 17th and 18th centuries.
Other last-Sunday-of-the-month 1 p.m. tours are Aug. 25, starting at Chimney Point in Vermont, and Sept. 29, starting at the Crown Point museum.
The Chimney Point State Historic Site is located at 8149 VT Route 17, at the Vermont foot of the new Lake Champlain Bridge. Call 802-759-2412 for information. The site is regularly open Wednesdays through Sundays and Monday holidays through Columbus Day, 9:30 a.m. to 5 p.m. The Crown Point State Historic Site is located at the New York foot of the bridge. Call 518-597-3666 for the Crown Point museum.