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

AlvaradoPark2

Alvarado Park

Alvarado Park2 bedrock mortars, 275+ cupules, 2 PCNs, and midden behind gazebo.This chlorite blueschist outcropping on Wildcat Creek has more cupules on it than any other we know of in the Bay Area. Was it just the blueschist found here and on Baxter Creek that attracted cuple-makers, or was something else at work?Jim and Heather […]

Black-Hills-Trail-Possible-PCN

Black Hills Trail

Black Hills Trail.Three bedrock mortars, a possible PCN, and a slick.Elevation 1520 ft.Pecked curvilinear nucleated petroglyphs are not supposed to occur in Contra Costa County.We’re not so sure.

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.

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 […]

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!

1stTerraceCupuleRock

First Terrace

First Terrace31 bedrock mortars, a 23 cupule rock, and 3-4 housepits.Elevation 775 ft.This site and the Kitchen site are actually on the same terrace, separated by a creekbed, but because we discovered and named the Kitchen site first, we called this site the “First Terrace.”A view of the First Terrace. The cupule rock is near […]