Over at BLDGBLOG today there is a great read.From today's San Francisco Chronicle: "'These are some of the largest sand waves in the world,' said Patrick Barnard, a coastal geologist with the Santa Cruz office of the U.S. Geological Survey. 'They're certainly in the upper 10 percent ....Unfortunately – or perhaps more interestingly – they're underwater, lining the bottom of San Francisco Bay like tectonic corrugation:
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