From September 2017 to May 2018, I traveled several times along the Canada-US border in the area of Roxham Road and Lacolle in Quebec, in search of traces of the passage of so-called illegal migrants. I retrieved objects, some of which probably belonged to migrants and others, possibly to border services officers (dog toys, gloves, etc ...) These are the objects that can be seen in this series of photographs. With photos of Canadian border landscapes taken in the winter of 2017 as background, I photographed those lost objects. In some cases, I print the result on large paper that I glue on a rigid support (foamboard). Finally, I cut the glued photo in five or six parts that I rephotography again. On a formal level, this way of proceeding allows me to play with the limits of the second and the third dimension (2d / 3d) and to blur the tracks of the three-dimensional world.