Fossil treasure trove in Wyoming cave

Updated 12:36 PM ET, Sat August 9, 2014

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Images taken in July from the Bureau of Land Management show researchers inside the Natural Trap Cave in north-central Wyoming, which contains the remains of tens of thousands of animals.

Photos: Fossil treasure trove in Wyoming cave

Fossil treasure trove in Wyoming cave – Images taken in July from the Bureau of Land Management show researchers inside the Natural Trap Cave in north-central Wyoming, which contains the remains of tens of thousands of animals.

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Photos: Fossil treasure trove in Wyoming cave

Fossil treasure trove in Wyoming cave – The fossils include many now-extinct species from the Pleistocene period tens of thousands of years ago.

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Photos: Fossil treasure trove in Wyoming cave

Fossil treasure trove in Wyoming cave – Justin Sipla, left, Julie Meachen and Jenna Kaempfer collect samples for analysis.

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Photos: Fossil treasure trove in Wyoming cave

Fossil treasure trove in Wyoming cave – Justin Sipla ascends a rope dangling from 80 feet after working at the bottom of the cave.

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Photos: Fossil treasure trove in Wyoming cave

Fossil treasure trove in Wyoming cave – Researchers stand below the entrance to the cave.

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