The Calestienne (Walloon: Calistinne) is a 130 km long narrow strip in the Belgian region of Wallonia and also in a small part of France, which is mainly formed of limestone rocks and reaches nearly 300 meters in maximum height. Because of erosion it is rich of relief.

The natural regions of Belgium

The Calestienne is a transitional region between the lower Fagne-Famenne and the higher Ardennes. It stretches from the communes of Fourmies and Wallers-en-Fagne just across the French border till Louveigné in the Belgian province of Liège.

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The Calestienne between Aywaille and Ferrières
 
The Calestienne