Standing on the Quadranou Mound, Williamstown resident Diana Knight, left, and her friend, Marietta resident ... builders built about 10,000 mounds in the Mid-Ohio Valley alone, but only about ...

Castle archaeologist Wes Clarke discusses the Conus mound in Marietta ... Conical mounds like the one in the cemetery, designated “Conus” in 1785 by leaders of the Ohio Company that settled ...

A network of ancient American Indian ceremonial and burial mounds in Ohio described as "part cathedral, part cemetery and part astronomical observatory" was added Tuesday to the list of UNESCO ...