"A host of previously unknown archaeological monuments have been discovered around Stonehenge as part of an unprecedented digital mapping project that will transform our knowledge of this iconic landscape – including remarkable new findings on the world’s largest ‘super henge’, Durrington Walls." Source: University of Birmingham.
"The Stonehenge Hidden Landscapes Project, led by the University of Birmingham in conjunction with the Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology, is the largest project of its kind."
Note: These incredible finds include "17 previous unknown ritual monuments...dozens of burial mounds [and] a long barrow (a burial mound dating to before Stonehenge) which revealed a massive timber building, probably used for the ritual inhumation of the dead...
"One of the surveys revealed that [the Durrington Walls] had an early phase when the monument was flanked with a row of massive posts or stones, perhaps up to three metres high and up to 60 in number – some of which may still survive beneath the massive banks surrounding the monument."
"Massive prehistoric pits" were discovered, along with "new information on hundreds of burial mounds, Bronze Age, Iron Age and Roman settlements and fields at a level of detail never previously seen." These new discoveries reinforce the picture of Stonehenge as just one part of a massive ritualistic complex, the ultimate purpose of which is still unknown.