ocr: Largest Canyonint the World About the Grand Canyon Every year the Grand Canyon draws visitors from many nations. Carved by the Colorado River over millions of years, it is the largest and most impressive canyoni in the world.Itisup T to18 miles (29 km) wide, about 277 miles (446 km) long and a mile deep. The deepest and most beautiful areas of the canyonare to be found in the park, which was established in1919.The Grand Canyon wasn't fully explored until the mid1800s.
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