Experts say the number of mammoth skeletons recovered at an airport construction site north of Mexico City has risen to at least 200, with a large number of pits still to be excavated at what may be the largest mammoths graveyard in the world.
Experts say the number of mammoth skeletons recovered at an airport construction site north of Mexico City has risen to at least 200, with a large number of pits still to be excavated at what may be the largest mammoths graveyard in the world.
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