Very interesting, I saw them as a salad at the store. F+L
This pancaking is simply rock that has formed on the sea floor (a few M years ago...) Then been uplifted at some point, then the weather & sea took it out on it.
Iron & concerete. Despite that the bridge did not last...
"Hey you, YES YOU, stop disterbing my sleep!! Yer I know its drizzling... it's the 'coast, what do you expect...? Let me go back to sleep"