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Item type:Publication, Macabalaca: New evidence of the Kotosh religious tradition in the Huarmey Valley, Peru(Cambridge University Press, 2022-12-23)Rescue excavations at the site of Macabalaca (PV35-72) in the Huarmey Valley, Peru, identified a rectangular structure with niches on its walls and a floor with a central hearth. We present results of those excavations, emphasizing the stratigraphic components and relative chronology. We conclude that the structure belongs to the Kotosh Religious Tradition (KRT) and can be preliminarily placed in the Late Archaic (2800-1800 BC) or Early Formative period (1800-1200 BC). - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Geoglyphs in the Andean Central Coast: Combining digital and traditional survey techniques(Cambridge University Press, 2024-12-01)This Andean coast research has identified 113-plus geoglyphs spanning the Formative (1800-100 BC) to the Inka period (AD 1470-1532). The project combined digital technology and Remotely Piloted Airborne Systems to locate the sites. The authors also documented examples of ceramics and intricate road systems and suggest that the finds represent meticulously ritualised landscapes. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Embedded Religiousness and the Kotosh Religious Tradition in Highland Peru: The Site of La Seductora(Cambridge University Press, 2023-04-25)Religion played a key role in the social organisation and political authority of early Andean societies. Excavations at La Seductora in Peru have identified a circular structure with a central hearth and an underground ventilation shaft. The authors argue that the structure belongs to the Kotosh religious tradition, which dominated the central Andes during the Late Archaic and Formative periods (2800-550 BC). Probably representing a small shrine for use by local families, the authors situate La Seductora within the context of power and religiosity in Andean society, providing a model of relevance to similar contexts elsewhere in the world. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, U-shaped power: Infantas and the ritual-political nexus of Formative-period monumentality in the Chillón Valley, Perú(Cambridge University Press, 2025-12-01)Excavations at the Infantas complex in Chillón Valley, Perú, revealed a U-shaped monumental centre with a central mound, clay staircase and columned atrium. Aligned with structures from the Rímac and Lurín valleys, these complexes anchored ritual-political power, serving as hubs for ideological integration and territorial organisation in early Andean societies.3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Probabilistic forecasting reveals a silent collapse of archaeological heritage in Peru's Chillón Valley(Elsevier BV, 2026-03-01)Unregulated land-use changes are accelerating the loss of archaeological heritage, yet quantitative forecasts of site disappearance remain rare. We present an open, Python-based pipeline that converts two decades (2000 – 2023) of satellite-derived loss trajectories for 56 pre-Hispanic sites in Peru’s peri‑urban Chillón Valley into probabilistic collapse forecasts. After filtering for adequate temporal coverage, 33 sites were modelled with ordinary least-squares regressions whose parameter uncertainty was propagated through 10 000 Monte-Carlo draws. Under a business-as-usual assumption—recent degradation rates persist—median disappearance years and 95 % credible intervals place six sites as already lost, eight at high risk (< 15 years), and the remainder in mid- and late-century risk tiers. Kernel-density visualization of the full 2000 – 2023 loss record reveals three valley-wide degradation phases: initial stability (2000 – 2005), acceleration (2005 – 2015) and late-wave intensification (2015 – 2025). The framework shows how retrospective mapping and forward-looking uncertainty jointly prioritize intervention, while the peri‑urban context cautions against uncritical generalization to dissimilar landscapes. All code and data are openly archived to foster replication and adaptation.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Geoglyphs and formative-period activity in the middle Chillón Valley, Peru: Ceramic association and null-model tests of route proximity(Public Library of Science, 2026-06-01)Geoglyphs are widespread in arid landscapes, but their chronology and relationship to movement corridors are often difficult to evaluate where direct dating is unavailable. This study examines four geoglyph groups documented through systematic pedestrian survey and RPAS-based recording in two quebradas of the middle Chillón Valley, central coast of Peru: Huarabí (n = 2) and Pichausa (n = 2). Chronological inference is necessarily limited. Diagnostic Formative-period ceramics were recorded only in Huarabí, where they indicate nearby activity rather than directly dating geoglyph construction. Pichausa remains chronologically unresolved. To evaluate whether the documented geoglyphs occur closer to mapped route proxies than expected under explicit counterfactual assumptions, we measured nearest-route distances from within-geoglyph sampling points (k = 20 per geoglyph; n = 80 total) and from six unweighted Formative ceramic findspots in Huarabí. Observed distance distributions were compared with Monte Carlo simulations in which geoglyph shapes were randomly repositioned within defined survey windows while route geometries remained fixed. Across 999 simulations, Huarabí deviates from the tested null model under the survey-polygon window, or buffer = 0 m (p = 0.021), whereas Pichausa does not (p = 0.380). Results vary substantially under broader availability windows, indicating that inference is strongly conditioned by how potential placement space is defined.. These findings provide exploratory, model-dependent evidence that some Huarabí geoglyph contexts and associated ceramic findspots occur nearer to mapped route proxies than expected under the specified null model. They do not establish intentional route association, geoglyph construction age, or valley-wide spatial organization. The principal contribution is methodological: the study demonstrates how small geoglyph datasets can be evaluated through transparent null-model procedures while making explicit the limits imposed by sample size, surface chronology, spatial uncertainty, and the absence of terrain-based feasibility modeling.