This one is new to me but looks like it has been doing a rounds for a while. It was in The Times today but as that’s not available online free here’s a bit from The Guardian 2016.
From The Sunday Times
“Cavers fight to take the right to roam to new depths” Cavers are calling for the government to extend the rights that allow access to mountains, moors, heaths and downs to the subterranean systems that lie beneath some of Britain’s best-known landscapes. (read more)