Will Millard discovers the hidden history of Wales. He begins his tour in the north, uncovering long-unseen historical gems such as the biggest abandoned slate mine in the world.
In this second episode, Will continues his tour around Wales by moving to both mid-Wales and the west of the country. From a lead mine that's thousands of years old and a beautiful cave with a very scary entrance to an abandoned sea fort and a derelict mental asylum,
In this final episode, Will completes his tour around Wales in the south of the country. From the resting place of early man to a lost mediaeval city, and from a forgotten prisoner of war camp to an abandoned coke works,