Well west of the Eponymous Heroes monument. The shaft was of irregular width (ca. 0.81m where the full circle was first preserved), sunk in soft bedrock clay much of which had collapsed around the top ... Ca. 600-550 B.C.
Detail of the west sill of the monument at Post 8 showing tooling of blocks and levelling of stones at the ends of the sill blocks ... west 1637 ... June 1967
