Author and adventurer Will Millard (Go Fish with Will Millard, My Year with the Tribe, Hidden Cardiff) is back with a second series of Hidden Wales that sees him explore Wales’ lost, locked up and secret history.

Over six episodes, Will gains unprecedented access to long-forgotten and off-limits locations, secret spots and decaying industrial sites that are on the verge of disappearing forever. Across the series, Will offers new insights into how the Welsh landscape, architecture and culture has evolved over the centuries.

Will Millard said: “Although I’ve explored some of the world’s inaccessible corners, I’m often surprised about the incredible wonders right here on my doorstep in Wales. In this series, I’ll be travelling the length and breadth of this country to discover some of these hidden secrets. Lost worlds beneath our feet, industries that once powered the nation and structures that will take your breath away. It’s going to be exhilarating and dangerous. I thought I knew this country, but I was wrong. This is Wales as you’ve never seen it before.”

In the first episode of the series, Will treks below the surface to unearth an array of caves. In the Gower Peninsula, he discovers a secret smuggling past before visiting Paviland Cave where the 33,000 year old skeleton of the ‘Red Lady of Paviland’ were found. He also explores a newly discovered cave that is home to remnants of the ice age.

In Trefil he learns of a cave used to plan, and store weapons used, in the Newport Rising, while at Dan-yr-Ogof, he explores extraordinary cave systems with world famous cave diver Martyn Farr.

Will continued: “I’m going to be exploring what lies beneath our feet. Wales is home to many spectacular caves, tunnels and caverns but some of the best can only be seen by daring to venture inside some of the valleys, cliffs and mountains of this diverse landscape.”