STONES - Stonehenge, the prehistoric religious complex, commenced 2,200 BC within an earthwork about 380 feet in diameter. Some of the sarsens weigh 30 tons each - the outer range with lintels has a diameter of about 100 feet. Looking towards the West at sunset early in June. The various elements of standing stones, earthworks, Aubrey holes and avenues were not costructed together. It is a ritual centre and stellar computer