Volvon Village on Mallory Creek
Mortar Count: 715
Open
Upper Whipsnake Trail
Mortar Count: 2
Open
Volmer Peak Rock Wall
Volvon Overlook
Mortar Count: 3
Open
Above Condor/Coyote Trails
Mortar Count: 5
Open
Whelk Lookout
Mortar Count: 2
Open
ALA-481
Mortar Count: 2
Open
Whelk Pond
Mortar Count: 5
Open
Willow Park Golf Course
Mortar Count: 10
Open
Below Cave Point
Mortar Count: 11
Open
Below Jamie’s Knob
Mortar Count: 4
Open
Below Knobcone Point Road
Mortar Count: 21
Open
Windy Point
Mortar Count: 9
Open
Below Rock City
Mortar Count: 12
Open
Black Hills Trail
Mortar Count: 3
Open
Blaisdell Trail Alignment
Blue Oak Trail
Mortar Count: 16
Open
Bob Walker’s Cave
Mortar Count: 1
Open
Bob’s Mortar
Mortar Count: 75
Open
Briones Valley
Mortar Count: 2
Open
Camp Confluence
Mortar Count: 1
Open
Canyon Milling site
Mortar Count: 29
Open
Cistern Bath
Mortar Count: 1
Open
Clayton Ranch
Clayton Ranch Alignment
Condor/Coyote Trails
Mortar Count: 2
Open
Coyote Trail below reservoir
Mortar Count: 7
Open
Curry Creek Milling Station
Mortar Count: 18
Open
Curry Point Prayer Circle
Donner Creek
Mortar Count: 2
Open
Downstream from the Whelk Pond
Mortar Count: 1
Open
Elephant Rock
Mortar Count: 1
Open
Fallen Oak Village
Mortar Count: 46
Open
Fig Pig Gulch Meadow
Mortar Count: 19
Open
Founders Ridge
Mortar Count: 3
Open
Green Valley Creek
Mortar Count: 2
Open
Green’s Village in Fig Pig Gulch
Mortar Count: 75
Open
Greenhill Ranch, aka The Green Ranch
Hematite Processing Site
Mortar Count: 12
Open
Hematite Quarry
Highland Ridge Lookout
Mortar Count: 1
Open
Hog Canyon
Mortar Count: 7
Open
Hummingbird
Mortar Count: 10
Open
Indian Tree
Mortar Count: 6
Open
Intersection of Devils Slide Trail and Trail Through Time
Mortar Count: 1
Open
Intersection of Molluck and Coyote Trails
Mortar Count: 11
Open
Jamie’s Knob
Mortar Count: 13
Open
Jan Enderle Village
Mortar Count: 35
Open
Joel’s Rockspring Cave
Mortar Count: 2
Open
Joel’s Straggler
Mortar Count: 1
Open
Keller Ranch
Mortar Count: 2
Open
Lion’s Mane Village
Mortar Count: 72
Open
Live Oak Campground
Mortar Count: 28
Open
Long Canyon and Marsh Creek
Mortar Count: 36
Open
Los Meganos State Historic Park
Mortar Count: 2
Open
Los Vaqueros Log Cabin Village
Mortar Count: 60
Open
Los Vaqueros Overlook
Mortar Count: 2
Open
Los Vaqueros Pond Village
Mortar Count: 130
Open
Louise’s Walkway
Mortar Count: 2
Open
Lower Deer Valley
Mortar Count: 14
Open
Lower Highland Ridge Pond
Mortar Count: 5
Open
Lower Mallory Creek
Mortar Count: 2
Open
Lower North Blue Oak
Mortar Count: 3
Open
Lower Village Overlook
Mortar Count: 2
Open
Lower Village Upper Overlook
Mortar Count: 2
Open
Lower Volvon Village
Mortar Count: 200
Open
MacDonald Trail
Mortar Count: 1
Open
Macedo Ranch
Mortar Count: 4
Open
Mallory Creek #1
Mortar Count: 2
Open
Mallory Creek #2
Mortar Count: 7
Open
Mallory Creek #3
Mortar Count: 10
Open
Mallory Creek Village
Mortar Count: 45
Open
Mallory Ridge Pond
Mortar Count: 6
Open
Manhattan Trail–Black Diamond Mines
Mortar Count: 1
Open
Manzanita berry grinding slick with one cupule
Manzanita Ridge
Mortar Count: 2
Open
Manzanita slick
Manzanita Trail
Mortar Count: 11
Open
Mid Silva Creek Terrace
Mortar Count: 11
Open
Morgan Territory Ridge East Shelf #1
Mortar Count: 1
Open
Morgan Territory Ridge East Shelf #2
Mortar Count: 1
Open
Morgan Territory Ridge East Shelf #3
Mortar Count: 3
Open
Morgan Territory Ridge Ridge East Overlook
Mortar Count: 3
Open
Murphy Meadow
Mortar Count: 8
Open
Near Intersection of Blue Oak and Miwok Trails
Mortar Count: 5
Open
Near the top of Hog Canyon
Mortar Count: 3
Open
North Morgan Territory Ridge
Mortar Count: 2
Open
North Morgan Territory Ridge Lookout Knob
Mortar Count: 1
Open
Nothing There
Mortar Count: 38
Open
Off Marsh Creek Road
Mortar Count: 5
Open
Pine Canyon #1
Mortar Count: 2
Open
Pine Canyon #2
Mortar Count: 1
Open
Prayer Ridge
Riggs Canyon Rock Camp
Mortar Count: 113
Open
Rock City
Mortar Count: 13
Open
Rocky Ridge
Mortar Count: 10
Open
Round Valley
Mortar Count: 1
Open
Round Valley Village
Mortar Count: 317
Open
Saclan Village
Mortar Count: 8
Open
SE Mallory Ridge
Mortar Count: 4
Open
Silva Creek
Mortar Count: 2
Open
Silva Creek Cave
Mortar Count: 1
Open
Silva/Kellogg Lower
Mortar Count: 2
Open
Silva/Kellogg Upper
Mortar Count: 5
Open
Sindicich Lagoon
Mortar Count: 1
Open
Slick Ridge
Mortar Count: 33
Open
South Blue Oak Trail Ridge
Mortar Count: 1
Open
Stone Corral
Mortar Count: 33
Open
SW Riggs Canyon
Mortar Count: 5
Open
SW Windy Point
Mortar Count: 9
Open
Tao House Grooved Rock
The Toad
Top of Hog Canyon
Mortar Count: 1
Open
Trail Through Time
Mortar Count: 27
Open
Upper East Morgan Territory Ridge
Mortar Count: 6
Open
Upper Homestead Trail Knob site
Mortar Count: 8
Open
Upper Marsh Creek Tributary
Mortar Count: 3
Open
Upper Pond Village Creek
Mortar Count: 10
Open
Upper San Leandro Reservoir
Mortar Count: 8
Open

Territory: Bay Miwok

Speakers of Bay Miwok dialects occupied most of the area of Contra Costa County not bordering San Francisco or San Pablo bays. The territory of one Bay Miwok tribe, the Jalquin, may have extended into Alameda county and touched San Francisco bay at the mouth of San Leandro Creek.

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Volvon Village on Mallory Creek

Volvon Village on Mallory Creek 715 bedrock mortars and countless housepits spread over a half mile. Cupule rock. This village, located in the highlands of the Black Hills, must have been one of the largest settlements in the prehistoric Bay Area, yet it was, apparently, unknown to early archaeologists and historians. It does not appear […]

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Briones Valley

Briones Valley2 bedrock mortars and one possible mortarElevation 312 ft.Joel’s reconnaissance of Briones Valley turned up this mortar rock.The mortars here may have begun life as geoconcretions.

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Green Valley Creek

Green Valley Creek2 bedrock mortars in Green Valley CreekElevation 380 ft.Thank you Rick Hicks.Bob admires the mortars in the creek behind the Fresh and Easy market on Diablo Road. Although it’s the day after small rain storm, there’s an unaccountable amount of water in Green Valley Creek for late October in a drought year.The closely […]

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Lion’s Mane Village

Lion’s Mane Village72 bedrock mortars. Housepits.Named for an edible fungus found here.The area under the trees was probably once home to several families.The Lion’s Mane.Heather near grinding rocks. The open space here is a probable housepit.Jim and Heather examining bedrock mortars. This site is quite extensive. Explore.A venerable food processing station. Note that most of […]

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Macedo Ranch

Macedo Ranch4 bedrocks in the saddle of the “China Wall”.1 bedrock mortar and a grinding slick on ridge top above.This site is very near the Volvon/Tatcan tribelet boundary.Bob and Jim approach the China Wall.There are some surprisingly deep bedrock mortars here.A closeup of the deepest mortar. We call mortars with interiors like this “bullet-shaped.”

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Murphy Meadow

Murphy Meadow8 bedrock mortars in center of Round Valley.These mortars sit on a sloping hillside above Round Valley Creek in a grassland valley. This was probably a minor food processing center.Bob, Heather, and Jim look out from the Murphy Meadow site toward the Round Valley village.

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SE Mallory Ridge

SE Mallory Ridge4 bedrock mortars, 2 possible metatesElevation 1867 ft.Doc Hale says the holes at this site are real mortars, not geoconcretions. That’s good enough for us.

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Upper Homestead Trail Knob site

Upper Homestead Trail Knob site.Eight bedrock mortars.Elevation 1285 ft.A little site above the headwaters of Silva Creek.The conjunction of grassland and oak woodland is typical of Volvon territory.An old mortar.

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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.

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Green’s Village in Fig Pig Gulch

Green’s Village in Fig Pig Gulch75+ bedrock mortars; housepits.Elevation 716 ft.Jeff discovered this beautiful village on a Thanksgiving morning (!) reconnaisance hike. A great find, Jeff. The village extends over a wide area, and, like the Volvon Village, could be viewed as a collection of separate sites. We prefer the holistic view. About half the […]