Theories about Stonehenge for solstitial alignments in stonehenge and the timber circles at Durrington Walls and Woodhenge as well. Mike Parker Pearson also believes that the stonehenge was a monument of unification, bringing together different groups with different ancestries. He surmises that the five trilithons in the center of stonehenge could have symbolized five tribal lineages charting their descent from five original ancestors. The Preseli Hills might have had some ancestral significance for the stonehenge builders as well (perhaps this was their place of origin), this may have been the motive behind dragging the bluestones all the way from Preseli Hills to Wiltshire.
Stonehenge publication in 1995 of the monograph "Stonehenge in its landscape", which was the first publication presenting the complex stratigraphy and the finds recovered from the site. It presented a rephasing of the monument. More recent excavations include a series of digs held between 2003 and 2008 known as the Stonehenge Riverside Project, led by Mike Parker Pearson. This project mainly investigated other monuments in the landscape and their relationship to the stones — notably Durrington Walls, where another "Avenue" leading to the River Avon was discovered. The point where the Stonehenge Avenue meets the river was also excavated, and revealed