Me and my friends decided to visit Swan Mine in Kingsdown. From what I've gathered via bits and bobs online, it dates back over 100 years and the sandstone that was mined was used for the local architecture around Wiltshire and Gloucester. Part 2 is the exploration of a mile long WW2 ammunitions tunnel. We didn't do it all, and these are short videos just to show parts of it. I'll post it on the appropriate section of the forums.