Lynch Quarry site

Lynch Quarry site - Credit: Wikimedia Commons

The Lynch Quarry site, also known as the Lynch Knife River Flint Quarry, and designated by the Smithsonian trinomial 32DU526, is a historic pre-Columbian flint quarry located near Dunn Center, North Dakota, United States. The site was a major source of flint found at archaeological sites across North America, and it has been estimated that the material was mined there from 11,000 B.C. to A.D. 1600. The site was designated a National Historic Landmark in 2011.NPS NHL list for North Dakota Read more on Wikipedia

type: NRHP
date from: None

Source: en.wikipedia.org