Figure 4.17a.  Shaded-relief bathymetric map, colored by water depth, showing elevated areas and sand ribbon, east of Nantasket Beach (see fig. 4.2 for map location).  The darker patches indicate the areas where multibeam bathymetry was collected and the data gridded at 2 m; the rest of the area was mapped by single-beam sonar and the data gridded at 30 m.  See Figure 4.17b for companion sidescan-sonar image.   See Figure 4.18 for selected photographs at stations 5, 6, 8, and 10.

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