His research interests are in the Paleolithic of the Old World, the archaeology of decorated caves, the prehistory of North America, archaeopetrography and cultural resource management. He focuses on lithic technology and rock material sourcing, particularly exploring the socio-economic organization of prehistoric groups in relation to natural resources and landscape, as well as the symbolic aspects that often lie underneath. He has carried out most of his field work in Southwestern Europe (especially in France), but also in Central America and Central Asia (where he directed the excavation of the Early Upper Paleolithic site of Dörölj II). He is currently co-directing the excavation of Peyre Blanque, a late Pleistocene (Magdalenian) open-air settlement in the French Pyrenees.