Sindicich Lagoon – Briones Regional Park – Martinez
That’s the sacred mountain Diablo (Tuyashtak) looming in the distance.
This singleton mortar, accompanied by 2 probables, is about 150 yards north of the lagoon.
What the heck somebody was processing here we don’t know.

The Lagoon is very special. Worth a visit.
You can get here via several trail heads into Briones Park,


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