English: This map was created by the DSSV Pressure Drop's Kngsberg EM124 sonar system over the course of two weeks to map the Challenger Deep in the Marianas Trench. The Deep consists of three "pools" of varying depth with the central pool being the most shallow, then the western one, with the eastern pool measured to be the deepest at 10,925 meters. That depth was measured using the manned submersible DSV Limiting Factor on April 28 - May 3, 2019 as part of the Five Deeps Expedition.