Our Pick
Posted on @rawstates
Olentangy Indian Caverns
1935
Delaware County, Ohio
Limestone passages cut by an underground river and used for shelter by Wyandot people, opened as one of Ohio's first roadside attractions when a farmer's ox fell through the roof. It is a fair specimen of the era when every cave in America got a ticket booth.
That was 1 of the hidden places.
Location: documented spot
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