A boat tour deep inside The Mammoth Cave (Mammoth Cave National Park, now) underground rivers. Circa 1920s [1257X960]

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« The Green Line demarcation zone, Beirut, Lebanon 1982. [650×944].

What happened to Hitler’s bank account? »

Comments

Kutzmaguts

Is it always underwater now, or is it just seasonal? Did they put a dam somewheres r such?

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