Natural Trap Cave in north-central Wyoming is considered to be one of North America's most important troves of late Pleistocene fossils. Now, the U.S. Bureau of Land Management is planning to reopen the cave, which is 85 feet deep.
It is quite difficult to see the cave until you are standing next to it opening. More than tens of thousands of years ago, animals including mammoths, short-faced bears, American cheetahs and American lions failed to notice the 15 foot wide opening and met with a tragic end.
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