Since 2014, the festival Koll an Aktioun offers a varied program for a family audience and for the followers of the culture in all its forms. In addition to a national and international musical program, the festival offers a wide variety of cultural activities in the impressive historic slate of the Slate Museum.
In 2018, the program consists of four main components that are offered throughout the weekend of Pentecost (May 19 & 20, 2018). There are music, street art and reading shows as well as art exhibitions and a free visit to the Slate Museum. The experience and activities section offers interactive workshops for the whole family, such as mountain biking, forging and blanket demonstrations.