Michel de Certeau, French philosopher, in "The Practice of Everyday Life" when he speaks of the "invisible identities of the visible," makes a proposal very much in tune with photography. He proposes that what is seen in the urban landscape is always an indication of what has already disappeared, that the visible designates what is no longer there.
The idea of photography as a mere reflection of reality has been surpassed today by most of the artists working in this field. In their works they reflect not only the photographed instant, but situations, moments some from a past no longer evident or images that indicate or suggest to us facts, situations, suspicions, even states of mind.
Both Xavier Ribas with his work Invisible Structures, (2006) and Javier Codesal with The Lost Mountain, (2003) speak to us, from an anthropological point of view, about memory and absence, with a certain evocative character of what has already been lost.