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Archaeology: Earliest humans stayed at 'oldest hotel' in Mexico cave

Almost 2,000 stone tools and small tool fragments, called flakes, were discovered.

DNA analysis of the plant and animal remains from the sediment packed around the tools in the cave dates the tools and the human occupation of the site to 25,000-30,000 years ago.

Human DNA was not found which adds weight to the theory that the early people didn’t stay for long in the cave.

Dr Mikkel Winther Pedersen, a geneticist from the University of Copenhagen and one of the first authors of the paper, said: “We identified DNA from a wide range of animals including black bears, rodents, bats, voles and even kangaroo rats.

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