Earliest occupation at Bandurria is placed in the Late Archaic/Late Preceramic period (often summarized as c. 4000–2000 BCE). This marks the start of sustained settlement on the Huaura valley coast that later supported planned public/ceremonial construction.
By the late 2000s, multiple reports summarized radiocarbon results placing Bandurria around 3200 BCE, frequently cited to argue that Bandurria is at least as early as, or earlier than, better-known Norte Chico/Caral-Supe centers.
Syntheses of Bandurria’s ceremonial architecture describe sunken circular plazas and associated terraced/platform mounds and stairways—design features also seen across Norte Chico ceremonial centers and central to interpreting Bandurria as a public-ritual landscape.
The Ministry of Culture reported enforcement action to recover the legally protected zone after ongoing alteration (removal/excavation/planting) within the intangible area, including an administrative sanction and orders to remove plantings and mitigate further harm.
A management-plan summary cites Resolución Directoral Nacional 638/INC (2014) as modifying the earlier heritage declaration that classifies Bandurria as a monumental archaeological zone, reflecting ongoing administrative updates to its legal protection framework.
The regional government of Lima is cited as declaring the archaeological work at Bandurria of regional interest (often referenced as Acuerdo de Consejo Regional No. 027-2005-CR/GRL), reflecting increasing formal support for investigation and protection.
Alejandro Chu’s research framing Bandurria’s development around the interaction of coastal sands and wetland resources (and presenting radiocarbon-based arguments for early complexity) is referenced as being published in 2005 and later circulated as a key local scholarly resource.
Research led by Alejandro Chu is credited with identifying and excavating a distinct monumental/ceremonial sector (alongside domestic areas), clarifying that Bandurria was not only a small village but a planned center with public architecture.
Peruvian heritage authorities classified Bandurria as a Zona Arqueológica Monumental (a protected archaeological zone). A management document summarizing the legal framework cites Resolución Directoral Nacional 1030/INC (2002) as the declaration, later modified by another resolution.
Initial professional reporting and field investigations in the Huaura valley/Playa Chica area were produced in the late 1970s, helping place Bandurria within the growing dataset of preceramic coastal sites in north-central Peru.
Bandurria was identified in 1973, when irrigation-related flooding/infiltration exposed archaeological remains (and also contributed to site damage).
Filtration from the Santa Rosa irrigation works is widely reported to have helped create/expand the nearby coastal lagoon/wetland system (Albufera/Humedal El Paraíso), an environmental change that later became central to modern descriptions of Bandurria’s setting and preservation challenges.
Michael CarricoBandurria site: development and ceremonial architecture (c. 3500–2000 BCE)