It is at a place called Rocky Valley between Tintagel and Boscastle.

There is an old abandoned mill there and the carvings are in the rock just beside it.

Have a look at the Site index on my website www.tintagelweb.co.uk and then go to Rocky Valley Photographic Tour. You will see pictures of the lovely valley including the Labyrinth photo

Can you tell me the name of the Mill there please?