Aerial photography carried out since 1986 in the Breton interior, as part of a programme of research and inventory, has greatly increased our knowledge concerning the human occupation of this part of Armorica. This area has for a long time been considered as an archaeological desert. The progressive elaboration of methods aclapted to the agricultural cycle has privileged summer flights and has enabled the compilation of an important documentary archive fund. A first analysis has shown the extent to which the results obtained are influenceci by landscape use, agricultural techniques and geopedological conditions. The most significant discoveries concern the pre-roman and gallo-roman periods, which in general are represented in the area by ditched settlement enclosures. Aerial survey has also revealed, especially in areas that have been subjected to modern field reorganisation, a high number of ancient field systems often related to settlement enclosures. Research in new directions has recently been explored, such as the inventory of defensive mounds as well as the localisation of traces of mining and metallurgy activities in the forest of Broceliande. Elsewhere the study of the numerous results accumulated during the drought conditions of these last few years has enabled the first elements to be brought together to create an atlas of aerial archaeology.