Before it was renamed, it was known as Paso Puyehue after Puyehue Lake. Together with Paso Libertadores, it is one of the easiest of the Argentina-Chile passes, and one of the few with asphalted roads in the region. The main towns and cities respectively on both sides of the pass are Entre Lagos and Osorno in Chile and Villa La Angostura and San Carlos de Bariloche in Argentina.