Balade géologique le long de l'Ourthe, de Liège à Comblain-au-Pont ; Geological discovering trip along the Ourthe river, from Liège to Comblain-au-Pont (Belgium, Wallonia)

The regional governement of Wallonia (Région wallonne, DGARNE) is actually supporting (since 1990) the "New geological map of Wallonia" research program, updating the former edition accomplished between 1890 and 1919. The Walloon Region wants to enrich it by explicative works aiming to reach a large public like families, young people, etc. and to link physical activities to natural discoveries, in the respect of environment and nature. ; Modernisation de la carte géologique de la Wallonie