Great show. Some of that stuff makes you think.
Look at Puma Punka. Some say 5,000 - 12,000 years old.
http://www.google.com/search?xhr=t&q=puma%20punku&cp=10&qe=UHVtYSBQdW5rdQ&qesig=9g0PNxrlFvcrqrpYLCBq2Q&pkc=AFgZ2tkkPdCJJcR1-3YiIteHatspbZYR17bK9nQEQCtqwQ2YKApKQpeXj_Gay_wlygm_g1pqb1q7QLQelvbHuc66Y9ZV-OAUAQ&hl=en&rlz=1R2ADSA_enUS403&bav=on.2,or.r_gc.r_pw.&biw=1326&bih=653&wrapid=tlif131353229706901&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi
How did people do that that long ago?