The Paleoindian period began when the ancestors of American Indians first arrived on this continent. We’re not yet sure when that happened, but by 13,000 years ago a kind of flint spear point characterized by grooves running from the base toward the tip shows up across North America. They are called Clovis points, named for Clovis, New Mexico, where they were found among the bones of mammoths and showing conclusively that people lived here during the Ice Age. More than 1,000 Clovis and related kinds of points have been documented in Ohio. The majority of those points were found in the flatlands of central Ohio, but the county with by far the largest number of such points is Coshocton County, which is tucked in among the hills and hollows of the Appalachian Plateau.