Viroin (rivière) - Belgique walks

Over millions of years, the action of water has carved huge chasms up to 20 metres deep into the limestone. These natural chasms are called "Fondrys". In Belgium, they are only found in the Viroin region. Discover geological curiosities and viewpoints. Explore beautiful landscapes combining rocks, rivers and limestone grasslands where numerous orchids appear in spring.

The Calestienne is a geological limestone band just a few kilometres wide, stretching from east to west like a snake between Theux (Belgium) and Trélon (France), separating the schistose Fagne-Famenne in the north from the Ardennes in the south. It offers very different and more varied landscapes than the two regions it separates, making it particularly attractive for walkers.This cross-border hike is half in Belgium and half in France, with some pretty wooded sections and others in the countryside, an ascent of the Montagne de la Carrière nature reserve at Vaucelles, a fine view of the village of Hierges in general and its castle in particular, and a few sections through the limestone meadows and their eco-pastures.In season, the flowers will brighten up the route, particularly the few species of orchid on the Montagne de la Carrière.