irwin
Veteran Member
After living on our place for over 30 years, I discovered about 75 grindholes (bedrock mortars) about 4 years ago after clearing brush. There's another two dozen nearer the house we found 20 years ago. I've found single mortars here and there, maybe another dozen so far.
Besides being located in brush so thick you couldn't walk through it, these rocks were covered by duff and moss so the holes weren't obvious.
The first pic is after removing the brush but before cleaning the rock to reveal the grindholes, which is the second photo. Then some more I found in that same area.
A nearby university's archeology classes have been recording and measuring these, and I've learned much by listening in during their field trips.
I've found NO arrowheads, tho my neighbor has.
Phil
That is neat Phil.. Here's a picture of another grind hole site in CA...
Miwok Indian Grinding Holes Used To Grindiing Acorns For Soup, In The Largest Grinding Hole Site In The Us Stock Photo 52524955 : Shutterstock