I Just now caught up with this thread...good stuff, as I settle back with my first bowl of the day...
Ancient engineering is wickedly mysterious and fascinating!
Ask most people where the oldest civilization lived and you'll here answers like Mesopotamia (Iraq), Egypt or Iran. While these cultures can be traced back to 4000 B.C., the mysterious ruins of Tiahuanaco, in Bolivia, could be
14,000 years old! If you think the Great Pyramid in Egypt is a technological marvel, wait until you see what artists and engineers were doing in Tiahuanaco. This culture thrived at the breathless elevation of about 13,000 feet. They managed to somehow move stones weighing up to 200 tons and invented modular building techniques that would even today, be cutting edge.
Tiahuanaco: Gatway to the Gods