A new hydrothermal vent field, which scientists have dubbed "The Lost City," was discovered unexpectedly earlier this month on an undersea mountain at 30 degrees North on the Mid-Atlantic Ridge. This news item from the National Science Foundation discusses the discovery made by a team of researchers from Scripps Institution of Oceanography, Duke University, and the University of Washington during an expedition to study hydrothermal processes. Color photos of the carbonate formations are also presented.