Erratic boulder. Erratics are large boulders that have been carried by a glacier from one area to another and then deposited as the glacier thaws. As

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Erratic boulder. Erratics are large boulders that have been carried by a glacier from one area to another and then deposited as the glacier thaws. As such, they are typically composed of a different type of rock to that found in the area where they are deposited. Photographed in the Burren, County Clare, Ireland.

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Photo credit: © CLOUDS HILL IMAGING LTD/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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