Discovering a Coastal Rock’s Prehistoric Legacy

Jun 3, 2017

Smooth surface areas on some large rocks on the Sonoma Coast might be a remnant of prehistoric animals rubbing against them, but definitive evidence to justify the popular name given to these Mammoth Rocks” has been elusive.

Archeologist Breck Parkmnan (rt) shows the unusual rock surface that has given Mammoth Rock its name to California filmmaker Heull Howser.

Since he began looking into this issue, the now-retired archeologist has found several other similarly polished rock surfaces not too far from his first discovery. And after a paper Parkman wrote about his explorations was published, he heard about still more such locations in other states.