What earliest form of prehistoric monument in Wiltshire, England was Bedd Arthur similar to?
Bedd Arthur:  Thirteen upright stones and at least 2 fallen ones, each around 0.6 m high for an oval horseshoe with similarities to the earliest form of Stonehenge. Stonehenge: Stonehenge is a prehistoric monument in Wiltshire, England, 2 mi west of Amesbury and 8 mi north of Salisbury.
Stonehenge