BBC - Hidden Wales (2018) Part 1

Will Millard discovers Wales's hidden history by exploring forgotten, secret and almost inaccessible locations that show the country as it has never been seen before.

Part 1

He begins his tour in the north of the country, uncovering long-unseen historical gems including the biggest abandoned slate mine in the world, a forgotten mansion concealed in a wood, a decommissioned nuclear power station and a Victorian invention lying at the bottom of the sea.

BBC Site

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