Julian Cope presents Head Heritage

The other scenario -as we considered back there, somewhere- that the monument's orientation could be some sort of (now) indecipherable bow towards the rising, post-equinox sun, would thus imply that the builders got spectacularly 'unlucky' with their coincidental alignment ;)

I see that John North has some useful plans in his Stonehenge book (p72-81), but spends a lot of time stargazing from the chambers. He quotes Stukeley; "It stands east and west, pointing to the dragon's head on Overton-hill" (the Sanctuary and its concentric rings), although squinting at a map, this doesn't seem to be the case.