Since 2002 the Culebras Valley has been the focus of an extensive archaeological surface survey and limited excavations in selected sites carried out by Polish and Peruvian scholars. Over one hundred previously unknown archaeological sites have been recorded so far, and tentative interpretations of their chronology, functions and settlement patterns have been suggested. In this article, we report results of the nine field seasons and discuss their implications. We employ fieldwork data from the archaeological sites of the Culebras Valley to reconstruct settlement patterns, subsistence and craft production, focusing on post-Middle Horizon components, as well as the impact ofChimú and Inca cultures on local pre-Hispanic societies.