At least the sets are still there - in the Moroccan desert!
So, hundreds of years from now, when archaeologists stumble across this stuff, I wonder what crazy stories they'll come-up with to explain it. Which ALSO makes me re-think "Stonehenge." Maybe it's not the ancient holy Druid hookie-dookie everybody thinks it was. Maybe, if we could go back in time and ask a Druid what's the deal with the big rocks, he would honestly say: "Ahh, we were just screwin' around. Why? They're not still there, are they? Jeez. Sorry!"