The Chillón River is a river located in western Peru. Its waters are produced by the melting of ice in the glaciers of the Andes, and its mouth is located in the Pacific Ocean coast of the Callao Region. Its volume gets higher during the summer months (December to March). The river's valley is very fertile, as can be evidenced by the presence of various cultures for more than ten thousand years. Austrias longest glacier, the Pasterze, winds its 8 km (5 mile) route at the foot of Austrias highest mountain, the Grossglockner. ... Note that the geology in this article currently reflects views from the first decade of the 20th century. ... Categories: Departments of Peru ... Fljótsdalur in East-Iceland A valley is a landform, which can range from a few square miles (square kilometers) to hundreds or even thousands of square miles (square kilometers) in area. ...