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.
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.
Bureau of Land Management/AP
The fossils include many now-extinct species from the Pleistocene period tens of thousands of years ago.
Fossil treasure trove in Wyoming cave —
The fossils include many now-extinct species from the Pleistocene period tens of thousands of years ago.
Bureau of Land Management/AP
Justin Sipla, left, Julie Meachen and Jenna Kaempfer collect samples for analysis.
Fossil treasure trove in Wyoming cave —
Justin Sipla, left, Julie Meachen and Jenna Kaempfer collect samples for analysis.
Bureau of Land Management/AP
Justin Sipla ascends a rope dangling from 80 feet after working at the bottom of the cave.
Fossil treasure trove in Wyoming cave —
Justin Sipla ascends a rope dangling from 80 feet after working at the bottom of the cave.
Bureau of Land Management/AP
Researchers stand below the entrance to the cave.
Fossil treasure trove in Wyoming cave —
Researchers stand below the entrance to the cave.
Bureau of Land Management/AP