The union of San Felix and the industrial sector of this city gave birth to Ciudad Guayana in 1961. Ciudad Guayana is the home of The Guri dam, the second biggest hydroelectric power station in the world, which supplies the energy to the electric industry both local and national. In this city the two most important rivers of the country join, creating the Caronoco Zone, named after the two rivers' names Caroni and Orinoco. From one of the bridges that links Puerto Ordaz and San Felix this confluence is perfectly visible.