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Del Puerto Canyon – Bay Area Native Sites
Del Puerto Canyon
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Del Puerto Canyon


Del Puerto Canyon
20+ bedrock mortars
Elevation 575 ft.

A drive-up site. No hiking required. Note mortars in foreground. There are three known mortar rocks here, but a thorough examination of this site might turn up more and would surely raise the mortar count.


A closer look at the site. Note the rock near the left margin of the photo that looks something like a piano tipped onto its keyboard.


That “piano” rock was once home to seven bedrock mortars. How did it get tipped up like that?


There are at least ten bedrock mortars on the main outcrop here.

Three previous photographs by Bob Bardell


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