Surveillance footage captures the moment a sinkhole opened up in China, swallowing a man who died of his injuries. Yang Xibing is pictured in the top left-hand corner. A hole 20-metres deep (65 feet) opened up beneath him. The 25-year-old was a security guard at the residential compound in Shenzhen city. He was rescued from the hole but died in hospital. Some locals blame the subsidence on alleged illegal digging at a neighbouring construction site.