Canyon
A canyon (or gorge) is a big and deep crack in the ground, or a very deep valley.[1] Most canyons are made by rivers. A few are made by earthquakes. They can be big, like the Grand Canyon, or small.
Canyons can be formed by erosion by running water which will take rocks and soil away.
Canyon Media
Grand Canyon, Arizona, at the confluence of the Colorado River and Little Colorado River.
Fish River Canyon, Namibia
Sumidero Canyon, Chiapas
Green River overlook, Canyonlands National Park, Utah, U.S.
One of the Three Gorges of the Yangtze River, China
The gorge of the Kabul River in Afghanistan
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References
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