The abandoned space is a recurring theme in Petersson's work. People become present through the traces they leave behind in environments that have been abandoned, lost or not yet used. The realistic and scaled models, often displayed in darkened installations, are given an alien and eerie dimension through subtle shifts. The everyday and familiar slips away to a twilight land on the border between dream and dystopia. The inherent playfulness of model making plays against the desolate atmosphere. In the work Stillbilder (Stills), which Petersson has been working on since his time at Valand, and which has been shown in many different versions, shipwrecks appear against a dark background. They were taken using a sidescan sonar that scans the seabed with sound waves. In the computer, the sound waves are reinterpreted into images of what is hidden in the depths of the sea. These works can be seen as documentation of a kind of involuntary Land Art where there is a slow but constant degradation. Since graduating from Valand Academy in 2004, Petersson has exhibited in Sweden and internationally, including Germany, Russia, Poland, Estonia, Lithuania, USA and France.