people have been building stuff for thousands of years...sometimes the stuff gets buried, broken or flooded. All it says is that archeologists still have job security and that we have more to learn about human history....Are there any "Lost" civilizations to find? ...a weak 'maybe'...Will we FINALLY find the evidence for ancient semi/divine beings from the stars who did wondrous things with anti-gravity and guided our entire race at it's beginnings?????....ummmmmmm...call me when you got artifacts.