This image shows the lay of a 100 acre tract of land within the yellow boundary. The shape of the hill and the position of the old fields on the ridge tops are clear in the 3D presentation. 3DEM was used to drape the aerial photograph over the Digital Elevation Model. The overlay was produced by scanning a paper photo of a more recent vintage than was available on the TerraServer. The colored lines were made on the 2D scanned image with Zoner Draw. Keep in mind that the original image is much sharper, larger and can be rotated at will from within 3DEM.