This shows the paved entrance to Grimspound, an ancient Bronze Age settlement located just a few miles from the Warren House Inn.
It consists of a large oval stone walled enclosure (best seen from climbing the hills on either side) and a number of ancient hut circle remains.
If you're interested there's a good source of information about Grimspound here if you copy the link.
http://myweb.tiscali.co.uk/andyspatch/grimspound.htm