michael dames has been here before but so have others- its not beyond the imagination to suggest that people wanted to represent the land as they imagined it would be seen from above. Paul Devereaux has gone into some detail on the shamanic journey- flying above the landscape and looking down in certain altered states.
I find it curious that star formations are given such strong identities when they seem interprative at best- can you see that the bear formation is a bear until someone draws an line around it? There must have been a point when star formations were given such identities- we dont question this- formations are incorporated into the science of astronomy- why should we dismiss the suggestion of an anthropomorphic interpretaion of prehistoric sacred landscapes?