This was observed in one of the transit tunnels in the same dam under construction where in recent days a critical situation has been experienced due to the accidental damming of the river flow due to the collapse of the diversion tunnels.
source/image: The Hidden Underbelly 2.0
The Hidroituango dam on the river Cauca, 110km north of Medellin, Colombia was in the final stages of construction, last week a geological fault blocked the tunnel system that diverts the flow of the river, generating the damming of a flow of 3000m3 / second.
In the first a team of workers was inspecting a sector near one of the divert tunnels at the precise moment when it is unblock.
The flooding downstream that swept through a riverside hamlet. Six hundred people were left homeless and two bridges, two schools and a health centre were destroyed.