Title block to "Offshore Soundings south of Cape Henlopen." These
were among the first offshore soundings to show the continental shelf break.
Image ID: cgs05062, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Delaware, Offshore
Photo Date: 1847
Credit: NARA C&GS Colllection
Category: Coast and Geodetic Survey/Archive Seafloor Mapping/Seafloor Mapping/
• High Resolution Photo Available