Significant activity is to highlight the lake in 1947 and recorded a great climax. Several steamers plied the waters of Lake Ranco, covering different areas in a large area stretching from Puerto Rettig, and the same Ranco, until Riñinahue, Llifén, Futrono, Isla Huapi and Puerto Nuevo. A whole era marked vapors as the Laja, the Saturn, Osorno, Lili, the Valdivia, going back and bringing people and goods on the waters of Ranco, rarely troubled by the puihua. Several of them were destroyed by the force of black puelche. One of the major works undertaken in the commune, has been the building of the Liceo Antonio Varas, "which concluded in 1960, the stock of education certainly has become a cornerstone of the municipality's development in educational level, social and cultural.