You can't even see the maps [which certainly aren't OS quality] among the decorated rocks can you? like i said before the problem is a lot of the symbols have two or more meanings [as do most things in the neolithic] - eg a simple cup can be a cairn, a pool of still water, a hut [or small dwelling] or just part of a pattern in a design [of the energy in the rock], but hey ho what do i know eh???