A 40-metre wall with a 1.5-metre gap at each end is built to bisect the gallery. Hidden
inside the wall are a series of microphones connected to a PA system. The entrance
side of the gallery is empty. On the other side of the gallery, coming out from the
bisecting wall a baseball bat is attached to a steel chain. The audience is invited to
strike the wall. Their action is amplified at 120db.
more images on Marco Fusinato’s website: