00:00Pumapunku
00:01The city built by lasers?
00:03In Bolivia, ancient stone blocks are carved with machine-like precision, drilled holes, smooth cuts, geometrically perfect interlocks.
00:10But this was done over 1,000 years before the Inca, with no iron tools.
00:13So who built it, and how did they carve granite-like butter?
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