Benica Quarry #1
Mortar Count: 5
Open
Benica Quarry #2
Mortar Count: 20
Open
Blue Rock Springs Park — North
Blue Rock Springs Park — South
Canada del Cierbo
Mortar Count: 28
Open
Dillon Point
Mortar Count: 4
Open
Glen Cove Park, aka Sogorea Te
Mortar Count: 20
Open
Mare Island shell midden
Mt. Diablo Winter Solstice alignment
Rankin Park Overlook
Mortar Count: 1
Open
Swett Ranch
Mortar Count: 16
Open
The Old Homestead

Territory: Carquin

The Carquin, an Ohlone tribelet, held territory on both sides of the Carquinez Strait.

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 […]

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.