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![Sidescan sonar imagery overlaying 3-D view of bottom generated by multi-beamsonar theb4119.jpg Sidescan sonar imagery overlaying 3-D view of bottom generated by multi-beamsonar](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb4119.jpg?itok=JqF2vWP1)
Description
Sidescan sonar imagery overlaying 3-D view of bottom generated by multi-beamsonar. Grey-scale 3-D image enhances feeling of looking at aerial photograph of rock outcrops.
Collection
Historic Coast & Geodetic Survey