Valle de la Mocha ( " the Valley of Mocha " ) is a plain in Chile on the north shore of the Bio-Bio River that contained the '' reducción '' of Mapuche who were transported in 1685 , from Mocha Island by Governor José de Garro ; from which the valley and plain took its name . Governor Domingo Ortiz de Rosas transferred the old city of Concepcion to this site from Penco after the May 25 , 1751 Concepción earthquake
1751 Concepción earthquake
1751 Concepción earthquake
Valle de la Mocha