One of the most dangerous jobs

Julio César, the only blackwater diver in the world

Sewer diver, his mission is to save Mexico City from flooding.

He lived underwater in a 7.5 earthquake and has encountered "15 or 20 corpses."

In the sewage it is totally dark and Julio César Cu, 62, must feel his way: "You work blindly, everything is by touch."

You have to be "crazy", he admits.

Julio César enters the fetid watersWaters of Mexico City