Yosemite Nature Notes 10: Rock Fall

Yosemite Nature Notes 10: Rock Fall

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Description

Since the glaciers retreated around 15,000 years ago, rock fall has been the major force of change in Yosemite Valley. Geologists work to understand this force of nature in order to protect the millions of visitors who come here each year.

Duration

8 minutes, 30 seconds

Date Created

07/07/2010

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