Underground Cavern discovered at Mont Alto 1905,

[jeff of pa]

The Fulton Democrat (McConnellsburg, Pennsylvania) 16 Aug 1905, Wed

 

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[ZXCVBNM]

I don't think anyone with any brains would have intentionally tunneled or dug out a cavern directly below a stream. Probably just a natural void. But interesting

 

[crashbandicoot]

Interesting indeed!

 

[jeff of pa]

Mont Alto pa cave brings up this