Whittell Marsh ShellmoundNear the tip of Point Pinole.Elevation 7 ft.N. C. Nelson counted 425 shellmounds in his seminal article “Shellmounds of the San Francisco Bay Region,” University of California Publications in American Archaeology and Ethnology, Vol. 7, No. 4, Putnam and Kroeber editors, The University Press, 1909. Very few can be seen today. This is […]
Winter Solstice alignmentElevation 734 feetThe rocks in this alignment are the only ones in the immediate vicinity.Dave hit the jackpot when he discovered this rock alignment, which lines up nicely with the gap between Mt. Diablo and North Peak.There is a 360 degree view from this hilltop.Awaiting the sunrise.Winter solstice December 21, 2010. Experts assure […]
Sunol Ridge Prayer CircleStacked-rock prayer circle.Elevation 1664 ft.Our jaws dropped when we saw this near the bottom of a little hollow just below the top of Sunol Ridge.A closer look at the geoglyph.Photograph by Bob BardellPart of the “spine” of this stone circle is a natural rock outcrop.This site is on private property. One should […]
Below McClure Springs75 yard long rock alignment overlooking the South Bay.Elevation 1908 ft.Some of the rock alignments in the Mission Peak area are probably natural formations. Others are clearly man-made. We believe this alignment is a member of the latter class.A close look at the stacked rocks.
Horse Heaven Trail3 bedrock mortars and 1 cupule/anvil on Horse Heaven Trail below Mt. Allison.We were turned on to this site by Tom Mangan’s blog. Thanks Tom!Horse Heaven Trail is the “road less traveled” to the top of Mission Peak. As we were writing up this site a hiker passed by and asked what we […]
Upper Lake at the Alma College site2 bedrock mortarsElevation 964 ft.In Bear Creek Redwoods Open Space Preserve.Acess currently requires a permit. See Bear Creek Redwoods permits for details.Joel’s research pretty much pinpointed this site.In the 1850s logger James S. Howe dammed Webb creek and created Upper Lake to drive a sawmill. Captain Stillman H. Knowles, […]