Prepared and published by the National Imagery and Mapping Agency. Depths shown by isolines and soundings. Relief shown by hachures and spot heights. "From Ecuadorean surveys to 1988 ; topography and shoreline from aerial photography in 1972." "Copyright 1996 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Includes source diagram. Map no.22112 This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA). United States. National Imagery and Mapping Agency. (1996). South America, Republic of Ecuador, Golfo de Guayaquil, Isla Puná--Archipiélago de Jambelí (Raster Image). LandInfo. Available at: https://purl.stanford.edu/gf311vh6131 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.