The Grand Canyon

Location: Arizona, U.S.A (Continent of North America)
Date created: The Colorado River flowed through it for over 6 million years carving out the canyon
Size: In some areas, it is up to 18 mi (29 km) wide & 1 mi (1.6 km) deep along its 277 mi (446 km) length
Layered bands of colorful rock reveal years of geologic history throughout the canyon.
It became a national park in 1919.
Supai Village, the capital of the Havasupai Indian Reservation, has a population of a hundred residents. You must walk there 8 mi (12 km) or fly in by helicopter.
It is the most remote community in the continental United States, and the mule delivers and carries out mail.
There are more than 1,000 caves in the canyon made over the years by water. You can take cave tours through some of them.
There are many trails that you can hike but make sure you make the proper preparations.
They have found fossils in the canyon, but not dinosaur fossils. They have found plant-like animals, shells, coral, sponges, dragonfly wing imprints, and more.
The canyon was once under the ocean between 740 million to 1.2 billion years ago.
Human artifacts have been found from about 12,000 years ago, from when people first started living in the canyon.
There is a glass horseshoe bridge that will take you about 70 ft (22 m) over the canyon rim so you can look over the edge. You can visit the bridge in the western part of the Grand Canyon.