Did mammoths scratch themselves against rocks?
Parkman believes, and he has a growing body of evidence to prove that mammoths and other large Ice Age creatures once used these very rocks near Duncan's Landing, along the Sonoma Coast State Beach, to scratch their backs. He claims the giant mammals rubbed so much that large swaths of rock have been buffered smooth.
Bears scratch against the trees, but which species is which? Lumpers vs. Splitters.
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