One advantage of being under constant surveillance by CCTV cameras is the amazing array of videos that are produced for the media. In this one, a sewer explodes massively, but luckily with no injuries.
It happened in downtown Beihai in the Guangxi Zhuang region of southern China. As we can see on the video, a sewer explosion tore through an 80-meter section of road, shaking the surrounding area, but fortunately caused no injuries.
Apparently the underground sewer tunnel contains natural gas pipelines and high-voltage cables.
Initial investigations into the explosion showed that waste pipelines and a cable junction in the sewer were completely destroyed.
However, natural gas pipelines were apparently undamaged. The local gas company shut down the gas supply in the areas around the accident site, just in case.