Mount Jasper Lithic Source

The Mount Jasper Lithic Source is a prehistoric archaeological site in Berlin, New Hampshire. Located on the slopes of Mount Jasper on the north side of the city, it includes one of the only known evidences of mining by pre-Contact Native Americans in the eastern United States. The mountain is a source of rhyolite, apparently prized for its qualities in the manufacture of stone tools. The site includes a mine shaft about 9 metres deep, as well as workshops at the base and summit of the mountain. The site was added to the National Register of Historic Places in 1992.
Mount Jasper is a low peak 1​1⁄2 miles northwest of the confluence of the Dead River and Androscoggin River in Berlin, New Hampshire. Its summit is at 1,584 feet above sea level, and its base at the Dead River is about 1,040 feet . It is visually distinguished by a steep rocky slope near its summit. The geology of the mountain includes bands of rhyolite.
The site, owned by the city of Berlin, encompasses a triangular area from the summit to points on the Dead River. Its principal features include one or more short mine shafts that follow the seams of rhyolite in the upper reaches of the mount, and workshop areas at both the summit and river-facing base of the mountain. While the deepest mine is 9 metres deep, there is ample evidence that other exposed seams of rhyolite were extensively quarried.

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