Our Pick
Posted on @rawstates
The John Day Fossil Beds
1975
Wheeler County, Oregon
Finetooth · CC BY-SA 3.0 · Wikimedia Commons
Forty million years of continuous fossil record in volcanic ash beds, one of the most complete anywhere for the age of mammals. A Methodist missionary named Thomas Condon began collecting here in the 1860s and worked out the sequence.
That was 1 of the hidden places.
Location: historic site
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