Dam threatens to break after heavy rainfall in Brazil

Drone video from Reuters captured rushing water speeding through the Carioca dam on Tuesday, with local mayor Elias Diniz cautioning the region is on alert.

Rainfall is expected to remain heavy this week, and residents are concerned the worst is still to come.

The rains may also have contributed to the dramatic collapse of a canyon rock face in the state on Saturday, killing ten people visiting a waterfall on boats.

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