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🪐 Planet & Space

How deep is the Mariana Trench at its deepest point?

The answer

10,935 m

That spot is the Challenger Deep. Mount Everest (8,849 m) would fit inside with more than 2 km of water to spare.

Source: Revised depth of the Challenger Deep from submersible transects (2021) – NOAA Institutional Repository

Asked in Plain #20 on Friday, November 6, 2026.

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