Term introduced by André Leroi-Gourhan for the analysis of the Magdalenian site of Pincevent (Seine-et-Marne). It refers to a significant group of archaeological remains. A distinction is made between “evident” structures, visible in an excavation (for example, a hearth, flint scatter or line of stones) and structures deemed “latent”, which are revealed by analysing the space, such as areas for the disposal of flint waste or stones reassembled by refitting.