The Neuwied Basin (also: Koblenz-Neuwied Basin or Neuwieder Rheintalweitung ) is a valley widening on the Rhine between the cities of Koblenz and Andernach and the center of the Middle Rhine Basin . The valley separates the narrow valley of the Upper from that of the Lower Middle Rhine over a length of about 22 kilometers . It borders on the right bank of the Rhine on the western slope of the Westerwald . On the left bank of the Rhine, its western, higher-lying parts of the landscape, the Maifeld and Pellenz , merge into the Eastern Eifel (Vordereifel).
As the only major valley widening between the Upper Rhine Plain and the Cologne Bay , which also has fertile soil, the Neuwied Basin has been settled since the earliest times. Today around 300,000 people live in the agglomeration . The seven cities of Andernach , Bendorf , Koblenz , Mülheim-Kärlich , Neuwied , Vallendar and Weißenthurm as well as a number of villages are located in a relatively small area .
The landscape of the basin is characterized by intensive fruit growing as well as by industrial settlements. Bimslagerstätten after recent outbreaks of Laacher See - volcano originated about 13,000 years ago and in the open pit can be reduced, have in the 19th century led to the development of a Bimssteinindustrie.
The Neuwied Basin can be assigned to the following main unit groups (two-digit code number), main units (three digits) and sub-units (decimal places) according to the manual of the natural spatial structure of Germany :
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