Bison bones are scattered across the site. (John Wendt via SWNS)
Bison hunters abandoned a long-used site over 1,000 years ago due to climate change, suggests a new study.
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Excavation area at the Bergstrom Site in what today is Montana. (John Wendt via SWNS)
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Students conducting archaeological excavations. (John Wendt via SWNS)
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Sediment cores were collected directly next to the excavation area and analyzed these for pollen and charcoal fragments. (John Wendt via SWNS)
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Students conducting archaeological excavations. (John Wendt via SWNS)
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