"Stone Age Atlantis: Once, the idea OF a lost world under the sea was the stuff OF legend, but now scientists are rediscovering a sunken land and piecing together the lives OF the people who lived there. In Northern Europe, a huge area known as Doggerland disappeared beneath the waves and has remained underwater ever since. But evidence OF this lost land is starting to emerge. In this two-hour special, learn why archaeologists believe Stone Age Europeans lived on this land and pioneered an advanced culture."