Richard A Thackeray
Legendary Member
I did think of the 'Holy Stone Of Clunrichert'
Norwegian National Museum of Fish Canning in Stavanger is worth a punt.
Gaping Gill
http://www.yorkshiredales.org.uk/visit-the-dales/discover-the-dales/caves-and-potholes/gaping-gill
Went down a few years ago, in the Bosuns Chair