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2.5 Million-Year-Old Canyon Found Beneath Tibetan River

Scientists from the California Institute of Technology and the China Earthquake Administration say they have discovered a deep, ancient canyon buried under the Yarlung River in the south of China's Tibetan Autonomous Region. The study found that about 2.5 million years ago, the Yarlung River had created a deep canyon at least 500 meters (more than 1,640 feet) below its current riverbed. “The data tells us that the river had [cut] deeply into the margin of the Tibetan Plateau, and...

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