27 bedrock mortars
Elevation 632 ft.
This site is underwater when the reservoir is full.
Joel led us here on one of his amazing South Bay tours.
Looking toward the site.
The water level in Lexington Reservoir was pretty low in March of 2012.
Note the clustering of these mortars. The mouths of the larger and deeper ones are elliptical or slightly eccentric.
If the mortars on this rock can be classified according to their roles in acorn processing as two anvils, one starter, and one finisher, what accounts for their relatively large size compared to functionally equivalent mortars in, say, Volvon territory? Rock quality? Local preference? Characteristics of the type of acorn processed?
This beautiful conical mortar and associated anvil will eventually be buried in silt. What a shame.
Photographs by Bob Bardell
Check out this video by Alexander Kerekes of several sites in the Santa Cruz Mountains including Lexington Reservoir.