Volmer Peak Rock Wall
Walpert Ridge Lookout
Mortar Count: 19
Open
Above Mission Peak Meadow
Mortar Count: 2
Open
White Hill
Blue Rock Springs Park — North
Blue Rock Springs Park — South
Chinese Tree of Heaven
Mortar Count: 18
Open
Los Vaqueros Log Cabin Village
Mortar Count: 60
Open
Mid-Walpert Village
Mortar Count: 32
Open
North Knoll, Chinese Tree of Heaven
Mortar Count: 12
Open
Observation Hill
Rockville Trails Village
Mortar Count: 34
Open
Rocky Ridge
Mortar Count: 10
Open
South Mission Peak
Southern Rocky Ridge
Mortar Count: 14
Open
Stone Corral
Mortar Count: 33
Open
Sunol Ridge, North of Prayer Circle
Sunol Ridge, South of Prayer Circle

Feature: Rock Wall

MidWalpertLookout

Walpert Ridge Lookout

Walpert Ridge Lookout19 bedrock mortars.Many are worn and chipped, giving the apppearance of age.The lookout.The view north and east from here is as impressive as the one to the west. This hill can be identified from many locations in the East Bay.Looking toward Mission Peak. Note the stacked rock wall probably constructed in historic times.Two […]

Blue Rock Springs Park — North

Blue Rock Springs Park — North Rock wall Elevation 695 ft. This wall reminds us of similar alignments on Mission Peak and in the South Bay. It runs, with breaks, nearly all the way to I-80. The barbed wire fence and rock wall coincide with each other. Were they constructed at the same time? Compare […]

WhiteHillWall

White Hill

White Hillsttacked rock walls forming an obtuse angle.Elevation 1128 ft.The park ranger who checked up on us while we were exploring the wall claimed the original land grantee had Indian laborers construct it. “The Miwok didn’t build walls,” he assured us. The wall marks part of the boundary between the San Geronimo and Punta de […]

Blue Rock Springs Park — South

Blue Rock Springs Park — South Curved Rock Alignment Elevation 520 ft. This alignment extends along the north and east sides of a little knoll at the bottom of valley. Who constructed it and why? A closer look. The knoll is flat on top. A detail shot showing the stacking.

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 […]

LCW1

Los Vaqueros Log Cabin Village

Los Vaqueros Log Cabin Village.60 bedrock mortars, 4 cupules, 4 slicks, and probably historic rock walls.Elevation 515 ft.Like the Pond Village, the Log Cabin Village found its year-round water in nearby Adobe Creek, but in the winter, water is typically abundant in seasonal tributaries like this one.Looking back toward the Log Cabin, which, alas, is […]

MidRidgeVillage

Mid-Walpert Village

Mid-Walpert Village32 bedrock mortars, rock wall alignments, numerous cupules and grinding slicks.A low, stacked-rock rectangle on a slope just below the crest of Walpert Ridge dominates this site. Could it have been a sheepherder’s corral? What, for paralyzed sheep? So who would have stacked these rocks if not the Yrgin residents of the small village […]

NorthKnollCTH

North Knoll, Chinese Tree of Heaven

North Knoll, Chinese Tree of Heaven12 bedrock mortars, probable housepitsA crudely stacked rock wall protects a small campsite.One should secure permission before visiting this site.