Heh! Get yersell doon there dude :)

See what you make of the holey sarsens. I'd be most interested to hear your thoughts on them.

Mind, you'd have your work cut out searching each and every stone, there are probably thousands of the blighters. And they are tricksters. The gaps and patterns left by the palm trees make these strange negative casts where the wood used to be, the boundaries between 'inside and outside' the stones are convoluted beyond reason. And so damned hard, signs of modification could be very subtle.

Free range sarsens are lovely things to behold.