- uploaded: Sep 28, 2009
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The Olmec civilization in Mexico sculpted massive stone heads 3000 years ago รขโฌโ 500 years before Rome was founded. These statues weighed up to 40 tonnes and were made from stone that came from the Tuxtla mountains more than 160 kilometres away. The journey would have taken the Olmecs across great rivers and virtually impassable swamps. How did they manage that?