Replacing Caisson Cover

Replacing the caisson cover near marker 15 at 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.

Photo Credit: NSF-OOI/UW/CSSF, Dive R1750, V14

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