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        6-12

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        Auditory, Visual

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        Part of NOVA
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        The Grand Canyon: Ancient Mountains

        This video segment adapted from NOVA features the twisted and melted forms of the Grand Canyon's oldest rocks, the Vishnu Schist. These rocks, exposed only in the deepest part of the canyon, are the remains of mountains that may have rivaled the mighty Himalayas in height. The segment explains why metamorphic formations like these are so resistant to erosive forces.

        This video is available in both English and Spanish audio, along with corresponding closed captions.

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