5 December 2012 - Sinkholes 2012 (sitios de interés)
Descripción del sitio
Approximative location
A sinkhole a few miles south of Grass Valley has the potential to engulf the northbound lane of Highway 49 and close down the main route to the Sacramento area, said representatives with the California Department of Transportation.
However, Caltrans workers who discovered the growing 10-foot-wide, 30-foot-deep sinkhole were able to halt its expansion by filling it in with sand Wednesday, said Jeff Johnson, a Caltrans resident engineer.