Walk and music in the Sonian Forest Zoniënklanken is a big musical walk through the Sonian forest! Put on your walking shoes and leave for 5, 10, 15 or 20 km to discover the sounds of the forest and of world music in fantastic natural surroundings: 4000 ha woods, 5 natural reserves and a rare fauna. You may encounter animals such as the Korean squirrel, the common chiffchaff or the fire salamander! But you will most of all discover great musicians.