The Mariana Trench's deepest point, Challenger Deep, is about 36,000 feet down, deeper than Mount Everest is tall.
Notes on verification
Confirmed by multiple independent, reputable sources (Wikipedia, CNN, History.com, Geology.com) with consistent depth figures around 36,000 ft, all exceeding Everest's height. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.833 clusters=3 claim_tier=notable]
Sources
- The Pacific Ocean—facts and information (seed:science_and_space)
- https://www.cnn.com/2023/06/23/world/mariana-trench-challenger-deep-facts-scn/index.html (corroboration)
- https://www.history.com/articles/mariana-trench-hms-challenger (corroboration)
- https://geology.com/records/deepest-part-of-the-ocean.shtml (corroboration)