Circulus is the Latin term for circle and the title of an 8-channel public sound installation erected outside the ancient monuments, the so called royal mounds in Old Uppsala, a town 100 kilometers north of Stockholm. The history of the royal mounds goes back 1,500 years ago, they were established as a symbol for divinity and power.

The sound installation Circulus takes as point of departure a circle formed group of trees growing on a site used for sacreficial cermonies not far away from the royal mounds. In Circulus, loudspeakers were mounted high up on the tree trunks, playing a quiet carpet of sound fragments recorded on site and then artistically manipulated beyond recognition.

The result could be experienced as a circle formed metallic sound field for the visitors to enter, and at the same time an abstract portrait of the site itself.