Stienstra’s Easy Chair2 probable bedrock mortars, a comfortable seat, and spectacular views.Elevation 1049 ft.Tom Stienstra, the Bay Area’s famed outdoor writer, described this site in a February 9, 2003 SF Chronicle article.Bob enjoys the view from Stienstra’s Easy Chair. That’s Pillar Point and the Pacific Ocean in the distance. This is an amazingly comfortable seat. […]
Welch-Hurst house14 bedrock mortarsElevation 1421 ft.Another one of Joel’s South Bay discoveries. This one is in Sanborn-Skyline County Park.Judge James Welch constructed this log-style house in 1892 (although some sources say 1908) as a summer home for his family. The historic value of the house, according to the National Register of Historic Places, derives from […]
Canyon Trail Park Petroglyph Boulder20+ bedrock mortars and 175+ cupules on one chlorite blueschist boulder.Elevation 141 ft.CA-CCO-152This rock is in Canyon Trail Park on a branch of Baxter Creek. Baxter Creek flows into the Bay near Stege, a long-vanished neighborhood on the old shoreline of San Francisco Bay, northwest of Albany hill. Some of the […]
Guadalupe Oak Grove Park4 bedrock mortarsElevation 296 ft.A funnel-shaped mortar or a small cone with a broad flaring mouth? You make the call.Skeptical Bob runs his hand over the inner surface of this shallow concavity to determine whether if feels “worked.” It does.A shallow mortar.Photograph by Bob Bardell.The mortar on this rock may have started […]
Round Valley1 bedrock mortar with a pestle or hammerstoneElevation 442 ft.We found this mortar and its in situ pestle or hammerstone on the bank of Round Valley Creek.Bob illustrates how the pestle/hammerstone might have been deployed. The user would probably have straddled the mortar, however.A closer look at the pestle/hammerstone snugly ensconsed in its mortar.
Albany Hill4 bedrock mortars and rich midden on the northeast side of Albany Hill near Cerrito Creek.Elevation 24 ft.There was an Ohlone settlement here. In addition to the shell middens at this site (Nelson’s 1909 map shows four), there were two on Point Isabel, which was once just offshore of Albany Hill.One of Nelson’s four […]
Curry Creek Milling Station.18 bedrock mortar milling station on a side creek; leaching slick in the creek.The huge bowls found here are like no others we’ve discovered in the East Bay hills. They are deep and wide and have bullet-shaped mortars in their bottoms. Deep cone-shaped mortars with unusually large oval mouths also appear here. […]