Arrows point to the highway at risk of erosion. Map of the Columbia River littoral cell. Bold line indicates ocean shoreline and light lines are included to depict 10 and 20 m offshore contours. Solid circles identify coastal communities and arrows point to major coastal geographic features. Northern littoral cell boundary of Pt.
Narrow beaches are evidence of the lack of sand.
Photograph view is to the north. Photograph view is to the south. Figure 13 . Ground Penetrating Radar in field operation. Foreground shows laptop computer and console.