Dozens of mammoths were trapped in a South Dakota sinkhole over 100,000 years ago. A bulldozer uncovered the first fossil 50 years ago, and experts have been finding bones ever since. The Mammoth Site ...
"Produced for the Mammoth Site of Hot Springs, South Dakota, Inc."--p. 2 of cover. https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries ...
A sinkhole in South Dakota is packed with mammoth fossils that experts have been digging up for half a century. Take a look.
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