Wissembourg Gap
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The Wissembourg Gap ( ) (German: Weißenburger Senke) is a corridor of open terrain approximately six kilometers (3.7 miles) wide that is situated between the hills of the Palatinate forest and the Bienwald on the Franco-German border. The gap is dominated by the town of Wissembourg, Alsace, France. The average altitude of the land in the corridor rises from 150 meters by the Bienwald to 250 meters by the Palatinate forest.
Because of the Wissembourg Gap's position on the Franco-German border, it was a strategic terrain corridor for invading forces during the Franco-Prussian War (Battle of Wissembourg, 1870) and in 1945 during World War II.

