Calbuco vs Valley

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Calbuco is a city and commune in southern Chile administered by the Municipality of Calbuco. Administratively Calbuco belongs to the Llanquihue Province of Los Lagos Region. The origin of the city was the Spanish Fort Calbuco founded in 1603, and became later an important fish market. The archaeological site of Monte Verde lies within the commune.

Calbuco Island is part of the commune and contains the city of Calbuco. There are thirteen other islands in the commune: Huar, Puluqui, Chidhuapi, Tabón, Mayelhue, Lín, Quenu, Quihua, Huapi Abtao, Chaullín, Caicué o lagartija, Tautil and Queullín.

Source: Wikipedia

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A valley is an elongated low area often running between hills or mountains which will typically contain a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period of time. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in valleys in high mountain or polar areas. At lower latitudes and latitudes, these glacially-formed valleys may have been created or enlarged during ice ages but now be ice-free and occupied by streams or rivers.

In desert areas, valleys may be entirely dry or carry a watercourse only rarely. In areas of limestone bedrock, dry valleys may also result from drainage taking place underground rather than at the surface. Rift valleys arise principally from earth movements, rather than erosion. Many different types of valley are described by geographers, using terms that may be global in use or else applied only locally.

Source: Wikipedia