Photo of underwater chimney

The carbonate structures at the Lost City Field include this chimney more than 30 feet in height. The white, sinuous spine is freshly deposited carbonate material. The top shows evidence of collapse and re-growth, as indicated by the small newly developed cone on its top.
Photo credit: University of Washington/Woods Hole Oceanographic Institution (Mitch Elend, University of Washington, generated this composite mosaic from digital images.)

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