About 7 years ago I suffered several early Sunday morning phone calls from a doctor in France who wanted me to map the Nazca lines against all possible variations of astronomical alignments over several centuries around 1200AD. It was a hopeless task.
There is no evidence for an astronomical connection like that at Stonehenge and as invoked by Thom for other UK prehitoric sites...themselves somewhat wishful thinking.
Something is not right. This message is just to keep things from messing up down the road