How were the Vikings so successful establishing their vast empire? Historian Dan Snow uncovers the lost Vikings in America with space archaeology expert Dr Sarah Parcak. She uses forensic science techniques and satellites to spot Viking sites, some as small as 30cm, beneath the ground. Dan explores how these master navigators voyaged thousands of miles, when most ships never left the shoreline.

Historian Dan Snow travels from Scotland to Iceland, Greenland and North America to unlock the secrets of the vast Viking Empire. Combining satellite imagery of archaeological sites with the latest forensic science, he pieces together fascinating evidence about this fearless civilization. He tracks their expansion and excavates what could be the most westerly Viking settlement ever discovered.