The lost city of Dunwich, Britain’s own underwater ‘Atlantis’, which has captured the imagination of people for centuries, could be revealed for the first time with high-tech underwater sonar. Marine archaeologists will explore the ancient sunken city, off the Suffolk coast, in the early summer. Dunwich, fourteen miles south of Lowestoft, was once a thriving port, and in the 14th century similar in size to London. However, storms, erosion and floods over the past six centuries have almost wiped out this once prosperous city, and the Dunwich of today is a quiet coastal village.