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Alexander Supan's world map of 1899 showing both deeps and bathymetric highsof the World Ocean. Note difference in names between Supan and Murray inprevious map. Supan's naming methodology prevailed in the Twentieth Century. Note also the Karolinen Graben running parallel to the Caroline Islands asopposed to the correct orientation of the Mariana Trench. (Image credit: NOAA Central Library Historical Collection)