The appearance of gated communities on the outskirts of the Buenos Aires constitutes an urban phenomenon of great relevance. I photograph their walls as geographic landforms. Frontiers that separate private properties and ranks of neighbours that roughly alter the urban landscape and rules in a radical way. Though walls express themselves in different typologies leaving traces of what they hide or expose, patterns emerge in the uniformity where everything is alike in its differences. From which side I stand, the way of perceiving the world changes through a play of realities between surfaces. While walking through the outside it feels the friction of the inflicted boundary, considering not only the causes that gave origin to it, but the consequences in terms of the social fabric, and I wonder how far we are prisoners of our own beliefs. I remark the interaction between the wall and the context through a mirror that reflects what remains outside. The mirror contains the other dimension, which the wall conceals.