Thousands of fish were killed and a two-person boat stalked into a hole after the largest dam in Franca, Brazil was completely drained by mistake on September 15, 2017.
The dam’s staff jumped into a boat to try saving some fish trapped in the mud after the water began to flow uncontrolled to Córrego do Espraiado.
The terrifying video shows the employees’ boat being sucked just above the point of flow that created a huge sinkhole in the middle of the mud. The officials were rescued by a crane and were not injured.
The containment structures had been opened to measure the flow of the Castelinho Dam, but the closure of the gates was hindered by tree branches.