Prepared and published by the Defense Mapping Agency. Depths shown by isolines and soundings. Relief shown by contours and spot heights. "From Russian and British Admiralty charts to 1982." "Copyright 1995 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Includes source diagram. "Sheet no. 29015." This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA). United States. Defense Mapping Agency. (1995). Antarctica, Cape Adare to Porpoise Bay (Raster Image). LandInfo. Available at: https://purl.stanford.edu/pd378px3779 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.