Where is the largest canyon on Earth?
Quick Answer
The largest canyon on land is often considered the Yarlung Tsangpo Grand Canyon in Tibet, the deepest in the world, while an even vaster canyon lies hidden beneath the ice of Greenland.
The Full Story
Which canyon is largest depends on how you measure. The Grand Canyon in Arizona is the most famous, about 446 kilometres long, up to 29 kilometres wide, and roughly 1.8 kilometres deep. However, the Yarlung Tsangpo Grand Canyon in Tibet is both longer and far deeper, plunging over 5 kilometres in places, making it the deepest canyon on Earth. Even larger features exist out of sight: a canyon system buried beneath the Greenland ice sheet stretches around 750 kilometres, longer than the Grand Canyon, and vast canyons lie on the ocean floor. Canyons are typically carved over millions of years by rivers cutting down through rock as land is uplifted. Each of these giants formed through a mix of powerful erosion and dramatic geological change.
Key Facts
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Suggested video title for this topic:
"The Largest Canyons on Earth — Grand, Deep, and Hidden"