The Grand Canyon is a steep-sided canyon carved by the Colorado River in the United States in the state of Arizona. It is contained within and managed by Grand Canyon National Park, the Hualapai Tribal Nation, and the Havasupai Tribe. President Theodore Roosevelt was a major proponent of preservation of the Grand Canyon area, and visited it on numerous occasions to hunt and enjoy the scenery. It is considered one of the Seven Natural Wonders of the World.
The Grand Canyon is 277 miles (446
km) long, up to 18 miles (29 km) wide and attains a depth of over a mile
(6,000 feet / 1,800 metres). Nearly two billion years of the Earth's
geological history have been exposed as the Colorado River and its
tributaries cut their channels through layer after layer of rock while
the Colorado Plateau was uplifted. While the specific geologic processes
and timing that formed the Grand Canyon are the subject of debate by
geologists, recent evidence suggests the Colorado River established its
course through the canyon at least 17 million years ago. Since that
time, the Colorado River continued to erode and form the canyon to its
present-day configuration.
For thousands of years, the
area has been continuously inhabited by Native Americans who built
settlements within the canyon and its many caves. The Pueblo people
considered the Grand Canyon a holy site and made pilgrimages to it. The
first European known to have viewed the Grand Canyon was García López
de Cárdenas from Spain, who arrived in 1540.
The Grand Canyon is a steep-sided canyon carved by the Colorado River in the United States in the state of Arizona. It is contained within and managed by Grand Canyon National Park, the Hualapai Tribal Nation, and the Havasupai Tribe. President Theodore Roosevelt was a major proponent of preservation of the Grand Canyon area, and visited it on numerous occasions to hunt and enjoy the scenery. It is considered one of the Seven Natural Wonders of the World.
The Grand Canyon is 277 miles (446
km) long, up to 18 miles (29 km) wide and attains a depth of over a mile
(6,000 feet / 1,800 metres). Nearly two billion years of the Earth's
geological history have been exposed as the Colorado River and its
tributaries cut their channels through layer after layer of rock while
the Colorado Plateau was uplifted. While the specific geologic processes
and timing that formed the Grand Canyon are the subject of debate by
geologists, recent evidence suggests the Colorado River established its
course through the canyon at least 17 million years ago. Since that
time, the Colorado River continued to erode and form the canyon to its
present-day configuration.
For thousands of years, the
area has been continuously inhabited by Native Americans who built
settlements within the canyon and its many caves. The Pueblo people
considered the Grand Canyon a holy site and made pilgrimages to it. The
first European known to have viewed the Grand Canyon was García López
de Cárdenas from Spain, who arrived in 1540.
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