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Archaeologists in Wales have used 3D digital modelling to shed new light on a strange prehistoric mound that aligns with the summer solstice.
The 5,000-year-old Neolithic passage tomb known as 'Bryn Celli Ddu' in Anglesey includes a stone cemetery that was important for prehistoric people for thousands of years.
Radar - Researchers - Rock - Art - Monuments
Using ground-penetrating radar, researchers have found rock art and monuments that date back thousands of years - suggesting this burial complex was much bigger than previously thought.
Bryn Celli Ddu, or the 'Mound in the Dark Grove', is a Late Neolithic passage tomb dating to around 5,000 years ago, located in north west Wales, on the island of Anglesey.
Feature - Day - Year - Beam - Light
It has a special feature, which means that on the longest day of the year, a beam of light is cast down the passage, lighting up the chamber.
It was a place to hold meetings, dances and ceremonies for several thousand years.
Archaeologists - Manchester - Metropolitan - University - University
Archaeologists from Manchester Metropolitan University, the University of Central Lancashire and Cadw now believe it was substantial larger than previously thought.
'We've been exploring the areas around the main mound at Bryn Celli Ddu to identify whether other burial cairns may have been present, but now lost under the surface', Dr Ben Edwards from Manchester Metropolitan University told MailOnline.
Understanding - Site - Number - Cairns
'What's been really exciting, and what completely changes our understanding of the site, is the large number of other cairns we've found.
'We've now identified and excavated two additional burial cairns, and the geophysics has shown us the location of at least two more. Bryn Celli Ddu now looks like a true burial cairn cemetery', he said.
Sites - Britain - Monument
Known as one of the most important archaeological sites in Britain, the 5,000-year old monument was...
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