We accept the public and the natural space as being our own. We colonise these territories through gestures and traces. The rôle that landscape plays in the act of contemplation and exploration is closely bound to the modifications that human beings have made to it. Do we become contemplative when faced with a landscape only because of the nature in it or do contemplation and understanding arise due to the certainty of the traces left by others in this space? How long does a trace last? Certainty vanishes at the same time as the gesture is interrupted.