Sacred Enclosures—Liberty.
Enclosure at Bourneville.
Works at Hopeton.
The circles often have an interior ditch; in some cases, as at Circleville and Salem, there are two circular embankments one within the other with a ditch between them; but there is only one instance of an exterior ditch, in the work at Bourneville, Ohio, shown in the first cut. The wall is from eight to ten feet high, and the ditch is shallow. The larger circles have generally a single entrance, which is usually, but not always, on the east. There are numerous small circles from thirty to fifty feet in diameter, found in connection with groups of large enclosures, which have very light embankments and no entrances. These may very likely be the remains of lodges or camps. The larger circles are almost invariably connected with squares or rectangles, which have similar embankments but no ditches. These have very commonly an entrance at each angle and one in the middle of each side, but the larger squares have often many more entrances.
View of Earth-works at Hopeton.