A little video of the world's longest underwater lava tube: Jameos del Agua in Lanzarote, Canary Islands. The video was taken last October. Thanks to Prof. Tom Iliffe for the invitation to go and photograph/video and... https://t.co/zY4CTXCKKg
A fascinating couple of days in the Shropshire lead mining district this weekend. Every year the Cambrian Caving Council visits a different area around Wales and the Marches and this year it was to Snailbeach. A group... https://t.co/MN373r4VJM