Cauca state Gov. Guillermo Alberto Gonzalez says the dead were found on Saturday when rescuers reached the area about 177 miles (285 kilometers) southwest of Bogota.
The Nevado del Huila volcano erupted late Thursday and loosed avalanches of mud and ash that injured nine, destroyed bridges and trapped people in their towns.
Alberto tells Caracol Radio that rescuers evacuated residents by helicopter on Saturday, .
One rescuer tells the radio that food supplies are dwindling in one town.
President Alvaro Uribe surveyed the damage Friday and ordered the air force to supply cut-off towns.