Quite a few on Dartmoor, from medieval mine towns [deserted for 100's of years] and old stone railways, for getting the granite out of moors...
plus loads of other stuff
Well the bike has had a quick service, checked valve clearences, topped up oil etc, and after checking with work I may even be able to get away on the thursday, so I may be there early having said that, I may camp somewhere else Thursday nigh, as I intend to take the coast road through Somerset and North Devon, we shall see.