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View of the initial excavation trench at Meadowcroft Rockshelter, Washington County, PA, circa 1973.
Credit: Dr. J. M. Adovasio, Mercyhurst Archaeological Institute.
Archeologists dug the initial excavation trench at Meadowcroft Rockshelter, seen in this photograph from the early 1970s, to assess the nature of soils and the cultural deposits located both inside and outside the rockshelter's roofline.