In 1987 Gordon Roberts discovered an unusual trail of footprints on an exposed patch of silt on the Sefton coast. His curiosity aroused, he began to take notes, then pictures, then plaster casts and careful measurements. Soon he found that the prints were thousands of years old and were of tracks of deer, extinct wild cattle, large birds and people - in particular children.
Alice Roberts meets Gordon to investigate what these footprints tell us about the people and communities that inhabited our coastline. Along with a team of experts, they uncover life 5,000 years ago to help paint a picture of the people and the local environment to reveal more about the life of our ancestors.