Three bears cave

This is up in the Fforest Fawr woods. I don't watch Sherlock, but I think it was used in an episode. The woods up here are used quite a lot in BBC Wales productions because a) they're quite old b) they look quite mystical and c) they're only 10 minutes drive from the BBC offices. It's an old tin mine apparently.
I may get a few more shots of it during the year, I couldn't get down to it today as the steep slope was too slippery. It's fenced off but I risked life to get you this shot, because I'm a warzone kinda photographer.