The Grand Canyon (1073)

Arizona is famous for its natural wonders. One of the greatest natural wonders of the world is the Grand Canyon of Colorado River. The Grand Canyon is one of America's main tourist attractions. It is so big that you must go there yourself to feel its true size and beauty. The Colorado River formed the Grand Canyon over millions of years. Slowly, the river cut down through hard rock. Today, the canyon is one mile deep and 277 miles (363 km) long and in some places it is 18 miles wide. It’s interesting that there are different kinds of plants and animals on opposite sides of the Canyon. The south side is a dry and desert country. The north side has tall forests. The canyon looks different at different times of day, and in different seasons and weather. At sunrise and sunset the red, gold, brown, and orange colours of the rocks are especially clear and bright. In winter, the canyon is partly covered with snow. You can walk down into the Grand Canyon, or you can go down on the back of mule. But be careful to carry enough water because inside the canyon, it is very hot – much hotter than at the top. The rock of the canyon walls shows many chapters of earth history. Scientists find here different animals which were turned to stone. The Grand Canyon is the world's greatest geological laboratory.