AUSABLECHASM - The grand opening of the NorthStar Underground Railroad Museum, located in the Town of Chesterfield Heritage Center, 1131 Mace Chasm Road, will be held May 21. The museum reveals the hidden history of the Champlain Line of the Underground Railroad and is managed by the North Country Underground Railroad Historical Association. Exhibits portray compelling stories of fugitives from slavery who passed through Northeastern New York and the Champlain Valley on their way to Quebec and Ontario, Canada. The museum and the Center are open Tuesday to Sunday and holiday Mondays from 9 a.m. to 4 p.m. from the third Saturday in May to the second Sunday in October and open at other times by appointment. Group tours may be arranged throughout the year. Admission is free but donations are gratefully accepted. The museum gift shop offers a selection of books about the Underground Railroad. Visit www.northcountryundergroundrail-road.com for more information.