A series of 2,500 year old ochre and turquoise cave paintings have been restored to their former glory with the assistance of the American archaeologist who discovered and sketched them about 50 years before. The Olmec cave paintings were first registered in 1968 although they had been known to locals for years.
The restoration took 12 years of effort, to remove the graffiti and mineral stains that had obscured the paintings. The American archaeologist David Grove was able to indicate what the original artworks looked like before the damage.
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