ALA-481
Mortar Count: 2
Open
Alvarado Park
Mortar Count: 2
Open
Black Hills Trail
Mortar Count: 3
Open
Camp Confluence
Mortar Count: 1
Open
Canyon Trail Park Petroglyph Boulder CA-CCO-152
Mortar Count: 20
Open
Chitactac
Mortar Count: 75
Open
First Terrace
Mortar Count: 31
Open
Lower Volvon Village
Mortar Count: 200
Open
Lynch Canyon Rancher Petroglyph Rock
Mortar Count: 13
Open
Mira Vista Park
Mortar Count: 10
Open
Monte Bello Open Space–headwaters of Stevens Creek
Mortar Count: 12
Open
Ring Mountain #2
San Marin
Stromer Spring
Mortar Count: 25
Open
Sulphur Spring
Mortar Count: 5
Open
Upper Crow Creek
Mortar Count: 3
Open

Feature: Petroglyphs

StromerSpring

Stromer Spring

Stromer Spring25 bedrock mortars, cupules, and PCN-style petroglyphsElevation 2023 ft.We used to drink from Stromer Spring in the not-so-distant past. The Park District warns against doing it now.A nice, single-track trail passes near here. We followed it many times without ever stopping to examine these rocks. If we considered them at all, we dismissed them […]

CampConfluence

Camp Confluence

Camp Confluence1 bedrock mortar on the north fork of Kaiser Creek.There’s supposed to be a petroglyph boulder on the upper reaches of Kaiser Creek, but we’ve never been able to find it. We did find this single mortar and little camp though.

SulphurSpring2

Sulphur Spring

Sulphur Spring18 cupule rock; 5 bedrock mortars; slick 70′ away.Elevation 722 ft.The cupule rock. The use of cupule rocks here and elsewhere is, for the most part, shrouded in mystery. See Cupule Petroglyphs in the Diablo Range by E. Breck Parkman in the Journal of California and Great Basin Anthropology Vol. 8, No. 2, pp. […]

CanyonTrails

Canyon Trail Park Petroglyph Boulder CA-CCO-152

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 […]

CrowCreekPCN

Upper Crow Creek

Upper Crow Creek3 bedrock mortars and a PCN.This sure looks like a Pecked Curvilinear Nucleated petroglyph to us. If it is, does that mean this site had some special significance?

Chitactac1

Chitactac

Chitactac75 bedrock mortars and a petroglyphBay Area Rock Art Research Association (BARARA) members view the restored village site.Remember: Stay on the pathway and no daylighting!