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Future Feeder » Blog Archive » Listen to Strange Sounds Recorded in a Hole 5 Miles Deep

Listen to Strange Sounds Recorded in a Hole 5 Miles Deep

February 8th, 2014 | Filed under: Uncategorized | Tags: | No Comments »

For more than 20 years, the world’s deepest hole could be found on Russia’s Kola peninsula, boring 40,000 feet down into the Earth’s crust.

more:Listen to Strange Sounds Recorded in a Hole 5 Miles Deep



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