Recently there was long thread about the BCA. I can now post possible answers to some of the questions, such as "Why is the BCA still raising membership prices when there is a significant amount still left in its coffers?"
Gets underground at Herculaneum (buried by Vesuvius) from 4 mins (& episode 1 contained some good stuff on geology):
https://www.bbc.co.uk/iplayer/episode/p0109k28/archaeology-a-secret-history-2-the-search-for-civilisation
