First attempt at a bathymetric map by Matthew Fontaine Maury. Showed vast relatively shoal area in Mid-Atlantic Grave. Source: In The Physical Geography of the Sea (1855) by M. F. Maury. (Courtesy of NOAA Photo Library.) Citation: In The Physical Geography of the Sea (1855) by M. F. Maury. Published by Harper and Brothers, New York. p. 209.
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