Between three and four hundred years ago, Ohio pre-historic Indians, believed to be of the Erie tribe, pecked numerous inscriptions or pictographs on the top surface of a large native limestone rock. The figures were later nearly obliterated by the elements, but Captain Seth Eastman, United States Army, measured and drew them in detail in 1850. Their meanings are not known. The pictographs include at least eight human figures, all with headdresses and some smoking pipes, as well as animal and bird forms.