What is aisne river?

The Aisne River is a tributary of the Oise River in northeastern France. It is about 280 km long and flows through the regions of Picardy and Champagne-Ardenne. The river rises in the Argonne Forest and flows through a series of deep gorges and steep-sided valleys before joining the Oise River near Compiègne. The Aisne River has played an important role in French history, especially during World War I when it served as a strategic battleground and was the site of several major battles. Today, the river is a popular destination for hiking, fishing, and canoeing.