An enigmatic tapestry of sounds hovers over the elongated valley near Grafschaft Monastery: the noises from the forest and fields are combined here with mystical sounds that seem to be of natural origin and yet are so unfamiliar. Their secret is only revealed when you stand right in front of them: The sounds emanate from the sound sculpture "Über den Teichen", a circle of tall copper and steel steles constructed by artist Andreas Oldörp according to the principle of organ pipes and installed in the Bremeck Valley. Listening, feeling and sensing guide hikers on their way to enjoying art in the open nature of the forest valley.