Digitally correlated Seasat images in the Coastal Plain and Piedmont of eastern Virginia are being analyzed to determine how L-band radar interacts with forest vegetation for eventual application of radar images to geologic mapping in vegetated areas. Previous optically correlated Seasat and airborne radar images lacked the dynamic range and/or geometric fidelity needed to make distinctions between subtle features in the forest vegetation. The objective is to place limits on earth backscatter models currently being devised by observing the relative grey-level relations of forest vegetation on radar images.