Stonehenge: mystery solved?

[HairOfTheDog]

A new theory is being propagated by the Stonehenge Riverside Project.
Their ten years of research has led them to conclude that if the stones could talk, they would tell the tale of the unity and peace that followed a long period of intense conflict between eastern and western Britain. The monument, in their opinion, was built to unify the two sides.

The researchers based their theory on on the social and economic climate in Britain between 3,000 B.C. and 2,500 B.C., when Stonehenge was erected. They also claim that since the monument is situated on a series of natural landforms, with the stones arranged so the land draws a line between the directions of the summer solstice sunrise and midwinter sunset, the "unification" message is clear since this alignment was meaningful to communities at that time.

Other/previous theories as to why Stonehenge was erected include:
-The monument was erected as an acoustic environment, designed in order to support certain sound illusions.
-The monument was a place of healing.
-The monument was an ancient observatory or a place of sacrifice?

Reference:
http://www.huffingtonpost.com/2012/06/22...ef=science