it's pretty clear that you don't really know much about stonehenge & its environs laver. the stonehenge you see and refer to was built between 2750-2500bc, the 'much more ancient' part refers to the wooden construction, the remains of which, painted circular markers in the carpark, are some distance from the monument. size, and age, nor indeed fame, have no bearing on your argument of the formation of crop circles. long meg & her daughters in cumbria is only slightly smaller than avebury, much older, and in much better condition, but the aliens seem to overlook it when choosing somewhere to doodle in the bushes.
also, referring to 'myths and legends' as 'facts' is beyond absurd. myths and legends are just that, myths. and legends.
would you call the myth of noah, building an ark and populating it with two of every animal on earth a 'fact'? or how about the legend of sleepy hollow? would you say that a deranged horseman with the head of a pumpkin was an undeniable truth?
there's a world of difference between open-mindedness and gulliability dude, not a fine line.
You clearly did not understand...it is a fact that myths and legends from around the world tell of external influence in the developement of mankind... that is not saying that these myths and legends are facts. That should have been obvious.