Has anyone been to the bottom of the Mariana Trench?
Nobody has walked on the bottom of the Mariana trench, but six people have descended to it in submersibles.
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A plastic bag was found in the trenchA handful of explorers have trekked to the Challenger Deep since then, but the expeditions are not common — and the journey is extremely dangerous. Explorer and Texas investor Victor Vescovo said he saw a plastic bag and candy wrappers at the bottom of the Mariana Trench.
The Trench was formed after the collision of two tectonic plates-the Pacific Plate and the Mariana Plate. One plate is forced under the other plate, with the older, denser oceanic crust sliding down into the mantle.