Grinding Rocks

The historic bedrock grinding rocks along the shoreline of Sailor Bar Park in Fair Oaks provide a tangible, silent connection to the Nisenan people who inhabited the lower American River canyons long before the Gold Rush.

Embedded into the exposed hardpan and river rocks, these smooth, bowl-shaped depressions—often called bedrock mortars or milling slicks—were used over generations by Indigenous women to process and grind staple foods like wild acorns, seeds, and nuts. Unlike the surrounding landscape that was heavily altered by hydraulic mining and bucket-line gold dredges, these ancient stone workspaces remain as a profound cultural landmark. Visitors walking the quiet dirt trails near the water’s edge can spot these historical artifacts, offering a moment to reflect on the deep human history of the American River Parkway.

Grinding Rocks on Sailor Bar Shoreline