Our Pick
Posted on @rawstates
Ruby Falls
1929
Chattanooga, Tennessee
Oydman (talk) · CC BY-SA 3.0 · Wikimedia Commons
A chemist drilling a lift shaft toward a known cave punched into an unknown passage 1,120 feet down and found a 145-foot waterfall inside the mountain. He crawled seventeen hours to reach it and named it for his wife.
That was 1 of the hidden places.
Location: documented spot
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