Caucau River is minor river in the city of Valdivia , southern Chile . Caucau River acts as a regulating channel between Cruces River and Calle-Calle River forming the Isla Teja island in front of the city centre . It confluence with Calle-Calle River marks the beginning of Valdivia River . ' The subsidence caused by the 1960 Valdivia earthquake caused a permanent flooding of parts botanical garden of the Austral University of Chile that were next to Caucau River
1960 Valdivia earthquake
1960 Valdivia earthquake
Caucau River