In this dramatic footage, the under construction Nam Ao Dam in Phaxay district, Xieng Khuang province of Laos bursts on September 11, 2017, causing severe flash flooding. People are seen fleeing as the collapsed dam succumbs to the power of surging water and debris.

Thankfully nobody was injured and all workers were able to escape to safety. The dam was at 85% completion before bursting. [source]