Ash from a volcano eruption in Chile continued to ground air travel across southern South America Saturday, UPI quoted airport officials as saying. Flights out of Buenos Aires, Argentina; Montevideo, Uruguay; and Porto Alegre and Florianopolis in southern Brazil were canceled for a second day, the BBC reported. The Puyehue-Cordon Caulle volcano range in southern Chile began erupting June 4. The ski season in Patagonia also may be affected as workers in Bariloche, Argentina, filled 600 trucks with volcanic ash that had covered the airport runway. A river that runs off the slopes of the volcano, the Nilahue, is clogged by ash and is flooding. Its waters are steaming, heated by lava up to 113 degrees. Nearby villages have been evacuated for fear of landslides.