Physical layers

Thickness of postersSeen in Lyon, France last year.

Accumulation of information or simply a physical representation of the history of concert posters. The different layers are added on top of each others creating this intriguing shape. This accumulation leads to a curious texture/surface in our environment: there is an inherent 3D effect to this stack of posters. Can there be a role of this "thickness"? What do people infer from it? the fact that no one is cleaning up this mess or the richness of cultural events in the area?