STS059-225-071 Potomac River; The Piedmont, Virginia/Maryland, U.S.A. April 1994 The rolling landscape of the Piedmont Region of Virginia and Maryland can be seen in this southeast-looking low-oblique view. In the upper right portion of the image, the Metropolitan Washington, D.C., area and the tidal estuary of the Potomac River are visible. At the bottom left of the image, a small portion of the Shenandoah River Valley is discernible. The Blue Ridge Mountains cross the bottom portion of the image. The Potomac River, separating Virginia to the right (south), and Maryland to the left (north), is visible traversing the scene near the bottom center of the image. The river cuts gaps into the Blue Ridge Mountains, as it flows generally southeastward into Washington, D.C. The runways of the Dulles International Airport can be seen to the right of the center of the image.