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Replacing Caisson Cover

Replacing the caisson cover at Southern Hydrate Ridge, after inspecting the eventual deployment location of a seismometer at that site. The caisson (the hole in the sediment at center) was excavated using a suction tube attached to the ROV during a previous expedition. Credit: UW/NSF-OOI//CSSF, ROPOS ROPOS Dive R1750, V14.

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