The rails of the trams and the related overhead lines create two layers of a striated territory. From the ground and from the air emanate a system enclosing the flows of the trams and the people, which is a grid mapping the trajectories. Moreover, the vibrations generated by the trams, trigger a tactile perception of the territory and generate another territorial layer. The installation Traces decodes the layers, the grid and the trajectories, and recombine them into another not fixed reality. Traces is an independent vibrating territory, deterritorialized and without borders applied to the body of the visitors.