Bluestonehenge
Wiltshire, United Kingdom
Bluestonehenge or Bluehenge (also known as West Amesbury Henge) is a prehistoric henge and stone circle monument that was discovered by the Stonehenge Riverside Project about 1 mile (1.6 km) south-east of Stonehenge in Wiltshire, England. All that remains of the site is the ditch of the henge and a series of stone settings, none of which is visible above ground.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).