![](http://www.alamy.com/thumbs/6/A66D5C6F-3446-41C9-8B77-20854C8B2DC0/2K82YW6.jpg)
Rocks used by mammoths in prehistoric times for rubbing and scratching, on the Sonoma County, California coast near Jenner.
Size: 4480px × 6720px
Location: Jenner, California
Photo credit: © Gina Kelly / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: california, county, jenner, kortum, mammoth, prehistoric, rock, rocks, rubbing, sonoma, trail