A vast underground river may be flowing thousands of feet below the Amazon river say scientists.
The discovery was made following a study of temperature variations at inactive oil wells drilled in the 70's and 80's. The findings suggest a river as long as the Amazon itself ( 3,700 miles ) may exist 13,000 feet below the surface.
"Valiya Hamza of Brazil's National Observatory said researchers found indications the subterranean river is 3,700 miles (6,000 kilometers) long, about the same length as the Amazon on the surface."
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Source: ABC News
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