We will be known by the tracks we leave behind: Exotic lithic raw materials, mobility and social networking among the Côa Valley foragers (Portugal)

► Toolstone sourcing indicates systematic long-distance transport of flint. ► GIS analysis provides a measure of range mobility and least-cost paths over time. ► Raw material is used to assess hunter-gatherers' mobility and social network. ► Côa Valley Palaeolithic rock art is interpreted as defining a cultural boundary.