Limestone with a carved grid pattern identified by Adam Arkfeld
Clear Brook, Virginia, site #44FK732
Several of the horizontal lines in this orientation have small uniformly spaced markings on them. The grid along with these markings would seem to provide all the necessary variables of combinations and arrangements for full expression of a complex written language.
Ken Johnston generalized illustration of the kind of incised grid pattern including small marks which may be observed on the Arkfeld site artifact.
View of side 3
