Bidasoa River, Spain/France, Europe, 66 kilometers

Bidasoa River is a river located in Spain and France, in Europe.

It is 66 kilometers in length.

It is important as it serves as a border between Spain and France.

Historically, it has been important to naval battles.

It has a diverse ecosystem, including many species of fish and birds.

The river is used for recreation, including swimming, boating, and fishing.

There are environmental issues related to water pollution in the river.

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