DavidTaylforth, that’s Ulverston/Plumpton innit? We used to jump off that as kids, how we survived childhood I’ll never know.
Here’s a little one, near San Sebastian. Probably rideable if you’re not scared of heights like I am, although I have ended up riding onto it when not concentrating on the trail.
And this one, you ride on top of or beside the pipe for about 10km, hardly descending but utterly engaging with some quite nasty exposure.