Yosemite - Kevitivity
Acorn Grinding Station, Wawona CA 
Strange holes in the rocks along this this fork of the Merced river.  I'm guessing they were made by the native Americans...

UPDATE:  Yes!  See Laura's comment bellow.

Acorn Grinding Station, Wawona CA Strange holes in the rocks along this this fork of the Merced river. I'm guessing they were made by the native Americans... UPDATE: Yes! See Laura's comment bellow.

wawonayosemiteMercedRiverIndiansnative americansamericaNational ParkparkMariposaTuolumneSierra NevadaWorld HeritagegraniteSequoiaJohnMuir.chaparraloakpinewoodlandsubalpinealpineInajacaliforniaacorngrindingstanchfieldkevinyosemiteblog.com