Douro River, Spain/Portugal, Europe, 897 kilometers

The Douro River is located in the Iberian Peninsula of Europe, spanning both Spain and Portugal.

It is 897 kilometers long and is one of the longest rivers in the Iberian Peninsula.

It is important for its role in the production of Port wine, which is produced in the Douro Valley.

The Douro has been an important river since the Roman occupation of the Iberian Peninsula.

The Douro River has a diverse and unique ecosystem, with many species of fish, birds, and other animals.

The Douro is popular for rafting, canoeing and other recreational activities.

The Douro River is threatened by water pollution, overfishing, and other environmental issues.

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