Madison Boulder Natural Area
Park · Madison, New Hampshire
A state natural area protecting a National Natural Landmark glacial erratic since 1970.
History
New Hampshire purchased the Madison Boulder property in 1946, and the site was designated a National Natural Landmark in 1970 by the U.S. Department of the Interior, per NH State Parks' own Madison Boulder Natural Area page. The Madison Boulder, at 83 feet long and weighing over 5,000 tons, is described by NH State Parks as one of the largest known glacial erratics in North America.
Visit
473 Boulder Rd, Madison, NH 03849
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