Our Pick
Posted on @rawstates
The La Brea Tar Pits
1901
Los Angeles, California
Caterpillar84 · CC BY-SA 4.0 · Wikimedia Commons
Asphalt seeps that trapped animals for 50,000 years, in the middle of a city, still bubbling. Over three million specimens have come out, dire wolves by the thousand, sabre-toothed cats, mammoths, and exactly one human, a woman found in 1914.
That was 1 of the hidden places.
Location: documented spot
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