The Mariana Trench is one of the most mysterious places on Earth. Measuring almost seven miles (37,000ft) deep, the trench sits on the floor of the Pacific Ocean and is so difficult to reach that just ...
The mysterious noises coming from the Mariana Trench have finally been explained — after fears that the spooky sounds were an alien invasion. Hailed as one of the most mysterious places on Earth, the ...
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