Situated in Northern Arizona, the Grand Canyon National Park is an instantly recognized icon of both the state and the US, famous for its colourful landscape and sheer size. It spans a length of 270 miles, a width of 18 miles, and a depth of 1 mile, and its walls contain layers of rock which tell volumes about the history of the Earth. It has been a human habitat for thousands of years, and its artefacts and ruins date back nearly 12000 years. The early 1800s saw expeditions and scouting parties sent out by the US government to explore and map the Grand Canyon, and it was made a Forest Reserve in 1893. Later on, in 1919, it became a National Park.eological evidence strongly suggests that the Colorado River sprouted out form the west end of the Grand Canyon National Park some five million years ago, and not before.
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