This photograph presents several manmade features—highly reflective, east-west-oriented Interstate Highway 8, near the center of the photograph, which connects the Imperial Valley of southern California with San Diego; the east-west-oriented linear feature south of Interstate Highway 8, which is part of the U.S.-Mexico border; the black Y-shaped reservoir south of Interstate Highway 8 near the 90-degree curve; and part of Mexican Highway 2 south of the border. The darker area with a hint of red (vegetation is recorded as shades of red on color infrared film) shows some of the forested, rugged mountain terrain. Several dark, faulted valleys are discernible.