Archaeologists have discovered the impressive remains of a probable Dark Age royal palace at Tintagel in Cornwall. It is likely that the one-metre thick walls being unearthed are those of the main residence of the 6th century rulers of an ancient south-west British kingdom, known as Dumnonia.
Scholars have long argued about whether King Arthur actually existed or whether he was in reality a legendary character formed through the conflation of a series of separate historical and mythological figures.
It’s the first time in Britain that really substantial buildings from the 5th and 6th centuries – the very heart of the Dark Ages – have been found. So far the excavations have revealed massive metre-thick masonry walls, steps and well-made slate flagstone floors.
Some of the buildings were relatively large. Around a dozen have been archaeologically or geophysically located over recent months. Two are around 11 metres long and 4 metres wide.http://www.independent.co.uk/news/science/archaeology/king-arthur-castle-cornwall-tintagel-dark-ages-palace-camelot-a7168761.html