If the man was Scandinavian, it might be Fingal's cave?

Treak Cliff Cavern... (on the basis that a bloke with a gull on his head might be called "Cliff")? ...I'll get my coat...

Nettle pot it is... :)

OK - let's not drag this out too much... I'm intrigued as to how 'pot' was arrived at but it's correct. Which pot? look at the 'weed'...

The Gnomes themselves might be a bit of a distraction...

shouldn't be too tricky...

Shatter Pot?

King Pot or Kingsdale?

Second vote for Biff's replacement inserts https://www.customduo.co.uk/Pitlamp-2-tone-Module/ A gift at £55. Add a couple of 18650 cells wired in parallel from a laptop battery, include a 2A Polyfuse and you have a perfectly useable lamp for well under £100.

Yes, well done... That was clearly too obvious! Take it away!

OK... First try at this...

Mare's cave? Pwll Mare?

Little Neath - Canal bypass...?

Met Pete many times when picking up a key for DYO and no matter how early or late, he was always cheerful and interested in what we were doing - usually with some good advice. He was a member of WSG back in the day. RIP Pete. Graham.

This - from the BBC website - note the reporter's name...

Westminster Speleological Group (WSG) formed at Easter 1950...

Whilst not specifically covering the area you refer to in detail, you might be interested in the postulations and surface work carried out by Dr. John Wilcock and members of the WSG between 2000 and 2009. This work is part of a huge summary of similar work across the area from Pant Mawr across...

Go to the end of Hangar passage, up over the ramp, through the choke and into the passages beyond to the right... From my log August 2008..... ...I went back up the climb to the Green Canal and, on the left, almost at the end of the canal, a well-worn opening beckoned. I climbed through into...

Dan yr Ogof - Hangar Passage...

You could do worse than look over some of the photos taken by J. Harry Savory depicting caving on Mendip in the early part of the last century. A man Deep in Mendip, Or the Wessex Publication 'A Pictorial History of Swildon's Hole'.