Oder River in Cigacice, Poland by Karol Serewis / SOPA Images
The Oder is a river in Central Europe. It is Poland's second-longest river in total length. The Oder rises in the Czech Republic and flows 741 kilometers through western Poland. The river is an important waterway, navigable throughout most of its length. It forms a link, by way of the Gliwice Canal, between the great industrialized areas of Silesia in southwestern Poland, and the trade routes of the Baltic Sea.
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