After TerraDat’s work appears in series one of BBC’s Hidden Wales, we returned for series two to digitally document two extremely challenging locations – both deep beneath the mountains of North Wales.
After descending a centuries-old wooden ladder, we crawled through muddy, unstable passages to a location where we set up a Faro laser scanner and lighting.
This animation shows laser scan data that flies through Victorian workings, over deadly pools of acid and breaks through a small hole to enter amazing 5,000-year-old Bronze Age copper mineworkings. It was a humbling experience to be one of just a few to visit this place and see the evidence of those ancient miners still lying all around.
The full episode is well worth a watch and can be found on iPlayer here.