Source: Nwo Report

Near the site of this Giant’s Fort was the mass grave yard. These people were slaughtered when the Algonquin Indians invaded from Canada.

Historical Collections of Ohio, Howe, Vol., 1  1847
Ashtabula County Ohio
     There were mounds situated in the eastern part of the village of Conneaut and an extensive burying ground near the Presbyterian Church, which appear to have had no connection with the burying places of the Indians. Among the human bones found in the mounds were some belonging to men of gigantic structure. Some of the skulls were of sufficient capacity to admit the head of an ordinary man, and jaw bones that might have been fitted over the face with equal facility; the other bones were proportionately large. The burying ground referred to contained about four acres, and with the exception of a slight angle in conformity with the natural contour of the ground was in the form of an oblong square.
It appeared to have been accurately surveyed into lots running from north to south, and exhibited all the order and propriety of arrangement deemed necessary to constitute Christian burial. On the first examination of the ground by the settlers they found it covered with the ordinary forest trees, with an opening near the center containing a single butternut. The graves were distinguished by slight depressions disposed in straight rows and were estimated to number from two to three thousand. On examination in 1800, they were found to contain human bones, invariably blackened by time, which on exposure to the air soon crumbled to dust. Traces of ancient cultivation observed by the first settlers on the lands of the vicinity, although covered with forest, exhibited signs of having once been thrown up into squares and terraces, and laid out into gardens.