According to AP, Professor Judith S. Young, of the Department of Astronomy, from University of Massachusetts, Amherst, has built a sun circle, a celestial computer along the lines of Stonehenge, or Avebury.
Although, it was proved by archeologysts that Stonehenge, like Avebury, or the passage tomb at Brugh Na Boine (well-known as Newgrange, Ireland), wasn't built by the Celts, since its earliest stage predates their arrival in Britain by over a thousand years, Stonehenge area was largely used by the druids who lived nearby to the megalith, where celtics rituals took place. It explains why Stonehenge and other megalithic monuments are widely entrenched with Celtic culture and that's why Stonehenge still is associated to them.

Stonehenge looms large in our imaginations— including the whole region of Averbury— since it is the biggest megalith in Europe! It is physically much larger than Woodhenge and it is also older than the several circles at Stanton Drew.
So, it makes sense that folklore calls Stonehenge the "Giants Dance," and credits Merlin as the chief architect, but those myths are comparatively recent. The passage tomb at Brugh Na Boine, constructed to mark the solstice, plays a much larger role in Irish myth, and is featured in several of the tales that preface the Táin. On the other hand, Stonehenge has had a surprisingly small role in British myth, given its age and magnitude.
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