Volvon Village on Mallory Creek
Mortar Count: 715
Open
ALA-60 at Crow Canyon Road and Castro Valley Boulevard
Mortar Count: 44
Open
Alvarado Park
Mortar Count: 2
Open
Blue Oak Trail
Mortar Count: 16
Open
Briggs Creek below Alma College
Mortar Count: 25
Open
Canada del Cierbo
Mortar Count: 28
Open
Canyon Milling site
Mortar Count: 29
Open
Canyon Trail Park Petroglyph Boulder CA-CCO-152
Mortar Count: 20
Open
Chinese Tree of Heaven
Mortar Count: 18
Open
Diablo Grande Cave
Mortar Count: 9
Open
Don Edwards Preserve
Mortar Count: 4
Open
Elephant Rock
Mortar Count: 1
Open
Evergreen Valley Cupule Rock on Silver Creek
First Terrace
Mortar Count: 31
Open
Gossip Rock
Mortar Count: 5
Open
Lake Del Valle, Campsite 74
Mortar Count: 1
Open
Los Vaqueros Log Cabin Village
Mortar Count: 60
Open
Lower Volvon Village
Mortar Count: 200
Open
Lynch Canyon Village
Mortar Count: 51
Open
Mallory Creek Village
Mortar Count: 45
Open
Manhattan Trail–Black Diamond Mines
Mortar Count: 1
Open
Manzanita berry grinding slick with one cupule
Mid-Walpert Village
Mortar Count: 32
Open
Mira Vista Park
Mortar Count: 10
Open
Monte Bello Open Space–headwaters of Stevens Creek
Mortar Count: 12
Open
Pena-Vaca Adobe
Mortar Count: 20
Open
Pine Canyon #1
Mortar Count: 2
Open
Rock City
Mortar Count: 13
Open
Round Valley Village
Mortar Count: 317
Open
Silva/Kellogg Lower
Mortar Count: 2
Open
Stone Corral
Mortar Count: 33
Open
Stromer Spring
Mortar Count: 25
Open
Tolenas Springs Village
Mortar Count: 41
Open
Upper Pond Village Creek
Mortar Count: 10
Open
Upper San Leandro Reservoir
Mortar Count: 8
Open
Upper Welch Creek Road
Mortar Count: 5
Open
West Ohlone Rocky Ridge
Mortar Count: 17
Open
Wildcat Creek Cupule Rock
Williams Gulch
Mortar Count: 2
Open

Feature: Cupules

WillG2

Williams Gulch

Williams Gulch2 bedrock mortars and 2 cupulesElevation 1369 ft.Jeff has a way of finding bedrock mortar rocks in remote locations.The mortar rock here sits on a little shelf above Miller’s Creek.Another view of the mortar rock.A closeup of the rockPrevious two photographs by Jeff Green.This site is on private property. Secure permission before visiting it.

LowerVillageNipple

Lower Volvon Village

Lower Volvon Village200 bedrock mortars and a 32 cupule rock. A second cupule rock also at the site. Numerous housepits.Elevation 1445 ft.This is one of the largest collections of bedrock mortars in California, and it is only about a mile and a half away from the main Volvon Village.The Lower Village sits on the side […]

RoundValley5

Round Valley Village

Round Valley Village317+ bedrock mortars, two cupule rocks, and a stacked rock enclosure.CA-CCO-320This settlement is the largest of three that sit along the eastern base of the Black Hills.Joseph Chartkoff in “A Rock Feature Complex from Northwestern California,” American Antiquity, Vol. 48, No. 4, (Oct., 1983), pp. 745-760, notes the similarity between this stacked-rock enclosure […]

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 […]

LCYNV4

Lynch Canyon Village

Lynch Canyon Village51 bedrock mortars and 5 cupules/anvilsElevation 451 ft.This village is adjacent to the South Fork of Lynch Creek.Exploring the site.Examining one of the mortar rocks.The flat slab holds 31 bedrock mortars, although about half that number are covered by vegetation in this photograph.Photograph by Bob Bardell.Lynch Canyon Open Space is now open to […]

SilvaKelloggLower

Silva/Kellogg Lower

Silva/Kellogg Lower1 bowl mortar, 1 broken mortar, 3 starters/cupules.Elevation 531 ft.This site may be inundated when the enlarged Los Vaqueros reservoir reaches its highest water level.Bob measures the bowl mortar.We believe the trinomial for this site is CA-CCO-452.

CTH5

Chinese Tree of Heaven

Chinese Tree of Heaven18 bedrock mortars (including 5 bowl mortars), 3 metates, 2 cupules, incised rocks, rock rectangles, rock walls, and rock-lined pathwaysThe Chinese Tree of Heaven tree (Ailanthus altissima) was introduced to California by the Chinese during the Gold Rush. The presence of this tree along with the dry-laid masonry skill apparent in a […]

MalloryCreekShelfLower

Mallory Creek Village

Mallory Creek Village.45 bedrock mortars in a small village on a shelf above Mallory Creek.18 cupules at one bedrock mortar station.Elevation 655 ft.This is a beautiful site in a secluded glade.Look for the old Indian trail leading to sites further up Mallory Creek.Bob stands in a possible housepit.How much dirt has washed down on this […]

LynxRufus

Stone Corral

Stone Corral33 bedrock mortars, prayer circle, 2 sets of double cupules, rock wall alignments, and hunting blinds.Elevation 1800 ft.What kind of animals would be constrained by this corral? We believe the stone corral was the site of Indian games and/or ceremonies. HIke up the ridge to the west and find the spot where you have […]