Ice age mining camp found 'frozen in time' in underwater Mexican cave


At the end of the last ice age, Indigenous miners in what is now the Yucatan Peninsula, Mexico risked life and limb — venturing into pitch dark caves illuminated only by fire — to extract a prized mineral, a new study finds.

That mineral wasn’t gold or diamonds, but red ochre, a valuable crayon-like pigment that prehistoric people used for both ritualistic and everyday activities, including rock paintings, burials and possibly even insect repellent. 



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