Mariana Trench

The Mariana Trench lies in the northwestern Pacific Ocean near the Mariana Islands, which, in fact, gave the trench its name. The deepest place of the trench (and the entire surface of the Earth) is the Challenger Deep, 10,994 meters deep, which is almost 1,000 metres below the average depth of the Trench. If the highest mountain on the Earth— Mount Everest—were dropped into the Mariana Trench, then its peak would still be underwater for two kilometres. And if you “turn” the Mariana Trench inside out, it will be at the height where civil aircraft fly.

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