Rescuers searched for a person missing in a mudslide Tuesday as big yellow tractors plowed through dark, thick sludge and pushed boulders off roads after flash floods swept dirt, rocks and trees down fire-scarred slopes, washed away cars and buried buildings in small mountain communities in Southern California. A shocking video has emerged showing a slow-moving black river of sludge rolling past the sign for the Oak Glen Steakhouse and Saloon followed seconds later by a surging wave of deeper mud carrying logs on Monday. The mud appeared to be head-high in places the next day. In the clip, a man standing closer to where the sludge is pouring in, is forced to run for his life. According to a statement on the restaurant's Facebook page, they are closed for business indefinitely 'due to unfortunate and catastrophic circumstances.' The Oak Glen Steakhouse and Saloon co-owner Brandon Gallegos said through tears in a video on Facebook: 'Our building's covered inside and out by mother nature coming down from these mountains.' He continued: 'We thank you all for your understanding during such a difficult time for our staff and family.' A GoFundMe page has been set up to help the restaurant's staff.