The tunnels of Tenby will feature on S4C tonight (Monday)as part of the channel's history series.

Presenter Dewi Prysor follows the network of medieval tunnels underneath the Georgian buildings of the historic seaside town in Darn Bach o Hanes (A Bit of History) tonight at 9pm.

Dewi said: “Apart from the Norman walls and castle that were built to keep out Welsh forces, the only medieval buildings left are a striking Tudor House, which is now run as a museum by the National Trust, and the ancient St Mary’s Church.

“But underneath the town there is a labyrinth of fascinating tunnels.”

With the help of local historian John Beynon and manager of the Hafod y Môr holiday accommodation, Heledd ap Gwynfor, he traces a network of tunnels which apparently linked the property of local merchant and ship-owner Thomas White to the harbour.

John Beynon said: “Behind Boots the chemist there is a door that leads to a chamber where Tudor merchants would stock wine, coal and other provisions.

It also forms part of a network of tunnels that lead to the harbour.

“It is said that Henry Tudor and his uncle Jasper hid there from the soldiers of the then English king, Richard III, but this may well be a myth.”