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The movie is a simulated flyover of the Charleston Bump, based on sonar data collected there by the NOAA Ship Whiting. The red bars indicate proposed dive sites. The deepest holes at the beginning of the flyover (on the northern part of the Bump) are about 600 m deep. The flight goes over the top of "Wreckfish Scarp" at about 375 m deep, then decends down a "ramp" to a series of ridges at 600-700 m deep. The sideview image is a still image of the bottom topography shown in the flyover movie.
Related Links
Investigating the Charleston Bump Exploration