Topological insights into the diachrony of ancient road networks: Exploratory predictive modelling in the Andean highlands

A novel predictive modeling approach reveals the chronological evolution of ancient road networks by analyzing their topological relationships with dated settlements, offering insights into long-term territorial dynamics. This method, applied to Qhapaq Ñan—the Andean Road System—demonstrates how road segments' use can be estimated without relying solely on direct stratigraphic dating. The study highlights the potential of network analysis to reconstruct and visualize the diachronic development of vast road palimpsests, such as those in northern Chile's arid highlands, where roads span 600 km and span the last millennium. This approach bridges gaps in empirical records, providing a robust framework for understanding ancient movement systems in deserts and mountain regions worldwide.

Saintenoy, T., Llobera, M., Thiéry, N. M., Crespo Fernández, M., Fábrega-Álvarez, P., & Santos, R. (2025). Topological insights into the diachrony of ancient road networks: Exploratory predictive modelling in the Andean highlands. Journal of Archaeological Science, 174, 106125. https://doi.org/10.1016/j.jas.2024.106125