Madison Boulder Natural Area, located in Madison, NH, is home to the largest known glacial erratic in North America and one of the largest in the world. This 17-acre park, acquired by the state of N.H. in 1946, showcases an enormous granite rock measuring 83 feet in length, 23 feet in height above the ground, 37 feet in width, and weighing upwards of 5,000 tons. Designated a National Natural Landmark by the U.S. Department of the Interior in 1970, Madison Boulder is a remarkable testament to the power of glacial activity and offers visitors a unique glimpse into our glacial past.
Visitors to Madison Boulder Natural Area can explore the park's trails, enjoy outdoor recreational activities such as hiking and camping, and even bring their pets along to experience the beauty of this natural wonder. With its rich geological significance and stunning landscape, Madison Boulder Natural Area is a must-visit destination for nature enthusiasts and those seeking to immerse themselves in the wonders of New Hampshire's natural heritage.
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