The Eighth Sound

The Eighth Sound is a forty-minute audiovisual installation created by Ronen Tanchum with Ehud Banai for the Israel Nature and Parks Authority at Beit Guvrin National Park. Installed inside the park's ancient cave system, the work unfolds across twenty distinct projection surfaces, each treated as its own encounter between stone, voice, image, and memory.

The work is built around Banai's voice, music, stories, and spiritual presence. Rather than illustrating the songs, the visual system lets generated forms move with the cave: across limestone, arches, openings, stairways, sand, and darkness. Each projection is tuned to its surface so the image feels discovered in the site rather than placed on top of it.

For Tanchum, the project marks a turn toward nature as an active public environment. The cave is not a backdrop. It is a historical body, an acoustic chamber, and a living archive. Sound, cultural memory, and machine-generated light come together as a slow pilgrimage through landscape and time.

Bringing the work into the caves felt almost obvious once I was there. My practice has often dealt with synthetic nature, responsive systems, and public environments, but Beit Guvrin made the relationship physical: the image had to answer stone, dust, echo, and darkness.

I wanted the machine to enter the cave with humility. The site already has its own intelligence. It carries geology, human use, ritual, absence, and memory. The question was not how to make a spectacular projection, but how to let generated light listen to the place and become part of its breathing.

Ehud's voice made the work personal and deep. It carries wandering, prayer, family, biblical memory, and the feeling of something remembered from before language. The eighth sound is the point where voice, cave, music, visitor, and machine begin to form one shared presence.