Hello Histarchers,

I am working on a site in the San Francisco Bay Area where there is a
historically placed arrangement of bedrock mortars that are a feature of a
historically modified landscape. The bedrock mortars were likely from a
nearby prehistoric site, but were moved to their current location sometime
between the 1870s and the 1950s as landscaping for a succession of estates
on the property. I have seen a few similar historic re-locations and
alterations of bedrock mortars at other sites in the area, but I don't know
of any literature on this topic. If you know of any references you would
suggest, I'd appreciate the advice.

Thanks,
Erica Simmons