In this undated photo provided by Vienna Museum of Natural History an employee of Vienna's Museum of Natural History works on tusk of a mammoth. The museum team has recovered two giant tusks and other remnants of what experts say are apparently the remains of a rare mammoth breed, after construction crews unearthed them while working on a stretch of Austrian freeway near Bullendorf north of Vienna. (Dr. Ursula Goehlich/Museum of Natural History via AP)
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