Strange phenomenon caught on film in Medellin

On May 17, 2018, a very weird phenomenon was caught in a transit tunnel, in Medellin, Colombia.

The Hidden Underbelly 2.0 claims:

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.

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.

Source, 21th May 2018