Don't drift away to only using the billionaire techbro platforms. UKC is so much more than winning a prize! 20+ years of combined caver knowledge. UKC - the cavers' online community.
Nothing undeground, but ironstone at 14 mins & jet / alum from 26:
https://www.my5.tv/kate-humble-s-coastal-britain/season-1/episode-5-856fc087-6221-40c4-b553-8e0e852bdad6
Was also mentioned in:
https://ukcaving.com/board/index.php?topic=25813.0
