http://gallery.usgs.gov/images/logos/usgs_only.jpg USGS Multimedia Gallery for tag: SandVolcano http://gallery.usgs.gov/ en-us OC_Web@usgs.gov (Office of Communications Web Group) http://gallery.usgs.gov/images/USGS.gif USGS http://gallery.usgs.gov/ <![CDATA[Vent of sand volcano produced by liquefaction is about 4 ft across in strawberry field near Watsonville. Strip spanning vent is conduit for drip irrigation system. Furrow spacing is about 1.2 m (4 ft) on center.]]> http://gallery.usgs.gov/photos/mQHs38Vjj1_83