Watch King Arthur's Britain, The Truth Unearthed |

Watch documentary | After the Romans left Britain in the fifth century, the country quickly descended into a long period of chaos – the Dark Ages. But an unprecedented discovery at Tintagel, long said to have been the birthplace of King Arthur, is challenging everything we thought we knew about this time – and the world of Arthur himself. This landmark new hour has exclusive access to the most significant ever excavation from these times, revealing game-changing evidence of a flourishing Dark Ages.