What's it like down a disused tin mine?
Media playback is unsupported on your device

What's it like to go down a disused 400-year-old tin mine?

South Crofty tin mine, near Camborne, is massive and was closed almost 20 years ago. But now a Canadian company, Strongbow, plans to open it back up.

The BBC's Environment Correspondent Claire Marshall went down to have a look.

  • 20 Sep 2017
Go to next video: The day 'black snow' covered Yorkshire