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Chillán conurbation or Gran Chillán (Greater Chillan) is a Chilean conurbation formatted for the communes of Chillan and Chillán Viejo in Ñuble Province in Biobio Region.
Hualpén (its pronunciation is: /wal'pen/) is a Chilean city and commune belonging to Concepción Province and the Biobío Region.
The city lies in the southern of the Concepción Province of the Biobío Region, 39 kilometres south of Concepción, and one of the ten cities(communes) that constitute Concepción metropolitan area.
It shares a boundary to the north with the communes of Purén and Los Sauces, to the east with Traiguén and Galvarino, to the south with Cholchol and Carahue in Cautin Province, and the west with Tirúa and Contulmo in the Arauco Province of the Biobío Region.
Rafael is a town in the commune of Tomé, in Concepción Province, in the Biobío Region of Chile.
Reynogüelén, also spelled Reinogüelén, Reinohuelén, and Reynohuelén, was the original Mapudungun name of the eastern regions of what are now the communes of Parral in Linares Province, and Ñiquén, and San Carlos communes in the Ñuble Province of the Biobio Region of Chile.
Together with ten other municipalities, it forms part of the Concepción Province, which in turn is one of four provinces that forms the VIII Region of Biobío Region.
Treguaco, also spelled as Trehuaco, is a Chilean town and commune in Ñuble Province, Biobío Region.
Lebu River, located in the Arauco Province of the Biobio Region of Chile
Lebu, Chile, a city and capital of the Arauco Province of the Biobio Region of Chile