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In the 19th century Americansfrom the eastern states moved out west to settle in the rich new lands alongthe Pacific Coast. The most difficult part of theirtrip was crossing the “Great American Desert” in the western part of the UnitedStates by horse and wagon .The western desert can be very dangerous. There is little water and there arefew trees. But the desert also has scenery of great beauty. Tall towers of redand yellow stones rise sharply from the flat, sandy valley floor. The scene hasbeen photographed many times and appears in movies and in TV. In Arizona, man-made dams across the Colorado River have made two large lakes in the middle of the dry desertcountry. At Lake Powell, the red stone arch of Rainbow Bridge rises high above the blue lake. There are few roads. Many areasof Lake Powell’s shore can only be reached byboat or on foot. But hikers in this empty desert land sometimes find very oldnative American pictures, painted on the rocks. In Death Valley, California,the summer temperature rises to 130-165 degrees Fahrenheit . There is less than two inches of rain eachyear. Death Valley is the lowest place in America