Crews on Monday are working to fix a giant sinkhole that opened up on Union and Fillmore streets in San Francisco. A 16-inch water main broke Sunday night, and water flowed underground for hours, causing the dirt erosion. Officials say 115 homes were damaged or impacted by water and mud. Subscribe to KCRA on YouTube now for more: http://bit.ly/1kjRAAn Get more Sacramento news: http://www.kcra.com Like us: / kcra3 Follow us: / kcranews Instagram: / kcranews