It was taken in Sept.2005.I
was in Grand canyon National Park.
A gorge of the Colorado
River in northwest Arizona. It is up to 1.6 km (1 mi) deep, from 6.4 to
29 km (4 to 18 mi) wide, and more than 321.8 km (200 mi) long. The eroded
walls of the canyon record many centuries of geologic time.