Figure 26. Detailed planar view of the sidescan sonar mosaic from north of Nashawena Island showing representative backscatter tones. Dark tones represent low backscatter and generally finer grained sediments; light tones represent high backscatter and generally coarser grained sediment; and complex patches of high and low backscatter with individual high-backscatter targets (boulders). Location of view is shown in figure 22.