The Calestienne

The Calestienne is a limestone belt several kilometers wide, located in the northern Namur-Fagne and in the southern Ardennes.

Those who seek adventure will find this tour fully satisfying, as this path leads you over rock outcrops, climbing sections over rocks, some steep paths, and twice across the river Viroin by wading.

All credits to http://www.originelewandelingen.be, where you can find the complete route description.
Caution! Without the route instructions on the above-mentioned website, you will have a hard time finding the way! Additionally, the description on the above link is already several years old, and not everything still corresponds to reality! Good navigation is necessary in the terrain.

Consider dangerous descents, overgrown paths, steep ascents, and twice wading through the Viroin.
Only to be carried out in good weather; in bad weather, the many rocks become dangerously slippery!