In 2021, an Italian-Peruvian archaeological team began a research project in the Ancash Sierra to investigate the origins of early monumental architecture in the northern-central Andes. The large complex of Tumshukayko—located in the northern part of the town of Caraz in Ancash, Peru—was immediately found to be the most suitable site for this project. This report presents an initial description of the current state of the remains, topographical data, and test pit results. Preliminary data suggest that Tumshukayko is a multicomponent site comprising at least two mounds that were built during the Initial Formative period (2500–1500 BC).

We previously reported astronomical alignments with the principal temple of the archaeological site of El Paraiso in coastal Peru. Here we describe a new investigation of nine small platform mounds associated with the two giant animal effigy mounds at the site. A total station map of the site permits possible astronomical alignments to be measured directly from the AutoCAD map by Pixelstick or AutoCAD. We corrected alignments for obliquity and for the apparent curvature of the sun and moon over the crest of nearby ridges. Azimuths for astronomical events were obtained from Starry Night Pro Plus 6.4.3. We found that 13 of 14 alignments were within 1° of the predicted astronomical values (and all 14 were within 1.5°). To account for these findings and those of the giant animal platform effigy mounds at the site, we propose a cosmology in the Late Preceramic period of solar and lunar alignments and the linkage of supernatural animals to dark cloud constellations. The building of these mounds was directed by astronomer priests. A shared belief in a cosmology that included a punishing force may have eased transactions by engendering trust among individuals living across river valleys and at different altitudes.

The Tiwanaku civilization (around AD 500–1100) originated in the Bolivian altiplano of the south-central Andes and established agrarian colonies (AD 600–1100) in the Peruvian coastal valleys. Current dietary investigations at Tiwanaku colonial sites focus on maize, a coastal valley cultivar with ritual and political significance. Here, we examine Tiwanaku provincial foodways and ask to what degree the Tiwanaku settlers maintained their culinary and agrarian traditions as they migrated into the lower-altitude coastal valleys to farm the land. We analyze archaeobotanical remains from the Tiwanaku site of Cerro San Antonio (600 m asl) in the Locumba Valley and compare them to data from the Tiwanaku site in the altiplano and the Rio Muerto site in the Moquegua Valley during the period of state expansion. Our findings show high proportions of wild, weedy, and domesticated Amaranthaceae cultivars, suggesting that Tiwanaku colonists grew traditional high-valley (2,000–3,000 m asl) and altiplano (3,000–4,000 m asl) foods on the lowland frontier because of their established cultural dietary preferences and Amaranthaceae's ability to adapt to various agroclimatic and edaphic conditions.

En este trabajo se discute un conjunto de indicios de poblamiento humano en diferentes locus de la Pampa Occidental: el sitio 1 de la localidad Tapera Moreira, El Carmel y Casa de Piedra. El poblamiento inicial de este territorio ha estado restringido a un solo dato cronológico correspondiente al Holoceno temprano, proveniente del sitio Casa de Piedra 1 (8620 ± 190 años aP) que no ha sido replicado en ese u otros sitios de la región. Por ello no ha sido incorporado en la agenda de la discusión sobre esta temática en publicaciones recientes. Sin embargo, en años posteriores a su publicación se han suscitado diversos hallazgos cuyos contextos señalan gran potencial informativo en relación con la ocupación humana inicial de paisajes sin historia previa. Se presentan indicadores de cultura material (puntas de tipo cola de pescado, litos discoidales y materias primas muy seleccionadas y con tratamiento térmico) recuperados en asociación en diferentes locus pampeanos, que se relacionan con las expectativas generadas para una etapa de ocupación inicial del paisaje. Se propone un modelo de exploración lenta y discontinua que utilizó vías de transitabilidad de distinto rango en el proceso de conocimiento y colonización de estos ambientes desérticos.

Este trabajo se propone avanzar en la comprensión de los procesos históricos de pintado del sitio arqueológico de Oyola (Sierra El Alto-Ancasti, Catamarca, Argentina). En particular, se evalúan similitudes y diferencias en la composición material de las mezclas pigmentarias para entrever la existencia de antiguas recetas pictóricas en la confección de las pinturas rupestres negras. Para ello se realizaron análisis microestratigráficos de 28 motivos mediante microscopía electrónica de barrido con análisis elemental por espectroscopía dispersiva en energía de rayos X (MEB-EDS), y microespectroscopía Raman (RS). Su estudio comparativo señaló el uso alternativo de dos pigmentos negros (carbón vegetal y óxidos de manganeso) combinados, en algunos casos, con un aditivo (sulfato de calcio). De esta forma, fue posible conocer ciertos aspectos de las recetas pictóricas que orientaron la preparación de las mezclas pigmentarias negras, aproximándonos a algunas de las tradiciones y saberes retomados. Para alcanzar una comprensión histórica de dichas recetas, se evaluó la distribución espacial, temporal y algunas características formales de los motivos rupestres realizados con ellas. Al no identificarse tendencias claras, se propone una definición menos normativa de receta pictórica que resalta los aspectos compartidos entre distintos episodios de pintado sin perder de vista las posibilidades creativas de cada evento.

This article investigates the utility of a chaîne opératoire approach centered on technologies of ceramic production for identifying Inca mitmaqkuna archaeologically. Although early documents suggest that the Inca program of resettlement (mitmaq) was massive in scale, archaeologists have had minimal success in identifying such relocated populations. Here we test a novel approach that focuses on technologies of production and associated tool assemblages used within different communities of practice. Previous studies indicate that the ethnic Cañari of southern Ecuador used a distinctive method of pottery manufacture involving a specific chaîne opératoire and a unique set of production-related tools. According to early sources, the Inca deported Cañari peoples to various sectors of Tawantinsuyu. In this article, we investigate the contemporary manufacturing style of ceramics from the Ancash region of north-central Peru—an area where Cañari mitmaqkuna were purportedly resettled—to determine whether distinctive communities of practice potentially representing relocated communities might be visible. The results of this study suggest that it is possible to identify connections among distant communities of practice via a focus on craft production technologies that, in certain historical contexts, may be construed as evidence for the presence of resettled populations.

We examined stable isotopes (δ13C, δ15N, and δ34S) of camelid, cavid, and cervid remains from Upanca, an archaeological site located in the Southern Nasca Region on the south coast of Peru. Occupation at the site began in the Middle Archaic (around 3200–3000 BC) and continued through the Nasca period (AD 100–650). Remains predating 2500 BC show low δ13C and δ15N values, whereas remains after this time show increasing and especially more variable isotopic values. We interpret this pattern as marking both a process of agricultural intensification and camelid husbandry diversification. Agricultural intensification began first with C3 plants in fertilized fields, beginning around 2200 cal BC, followed by an increasing use of C4 plants (maize, kiwicha, or both), particularly after 800 cal BC. By the beginning of the first millennium, people were using a diverse range of strategies to raise llamas and alpacas, including feeding them wild or cultivated C3 plants, feeding them cultivated C4 plant foods, mixing C3 and C4 plant foods, foddering some in natural coastal environments, and acquiring still other camelids by hunting wild stocks (guanaco, vicuña). Data also suggest that cavids were consuming at least some C4 products after 1000 cal BC and that the use of C4 plants increased over time.

We present the first geochemical data of archaeological obsidian for Isla Victoria, Nahuel Huapi National Park in Patagonia. XRF analyses were performed on 15 samples of obsidian-like rocks from the Puerto Tranquilo 1 site. Only five of the artifacts—all of which come from upper levels of the site—correspond to obsidian as a raw material. The provenance analysis indicates the use of obsidian sources located in the Andean Forest area of southern Neuquen Province. Based on these preliminary results, we propose a north–south circulation axis for this raw material. These geographic results are discussed in relation to the information available regionally.

Este trabajo busca conocer las estrategias tecnológicas, los rangos de acción y la conectividad en las estrategias humanas de ambientes marginales. Se discute, para el caso del sur de Mendoza, el modelo clásico de trashumancia cazadora recolectora entre tierras bajas y altas. El estudio se centra específicamente en El Payén y en el uso de la obsidiana andina Laguna del Maule. En El Payén, esta obsidiana ocupa el primer lugar entre las variedades conocidas y su uso se vinculó a circuitos de movilidad estacional que involucraban tierras bajas y altas. La obsidiana Laguna del Maule posee dos subtipos geoquímicos, el Subtipo 1 registrado en cordillera, y el Subtipo 2 localizado en depósitos fluviales distales. En este trabajo modelamos las estrategias de interacción de tierras altas con tierras bajas, enfocándonos en modelos propuestos para La Payunia, que ponen énfasis en la tecnología lítica y se articulan con análisis geoquímicos y geoarqueológicos. Los resultados sostienen que las poblaciones de El Payén obtenían este recurso mediante distintas estrategias tecnológicas: un aprovisionamiento serial del Subtipo 2, con circuitos de movilidad centrados en tierras bajas; diferente al Subtipo 1 de aprovisionamiento cíclico, que habría involucrado la interacción entre tierras altas y tierras bajas.

Ceramics play a central role in the debates around the relationship between the Viru and the Moche. A recent model considers Negative and Moche-decorated ceramics produced by potters affiliated with the elites to be the cultural markers of the Viru and Moche populations, respectively. Due to the similarity of Viru and Moche plain-wares and the presence of Castillo Decorated ceramics in Viru and Moche contexts, this model sees both types of ceramics as domestic traditions, produced by independent potters and sharing a common technique. The research we present here supports this recent model by reconsidering the social and cultural meaning associated with these ceramic types: it uses a novel approach for South America of reconstructing the chaîne opératoire by studying the traces visible on ceramics at a macroscopic and microscopic scale. The study demonstrates how these potters used their own traditions to produce decorated and undecorated ceramics. Furthermore, we found that Castillo Decorated is a type produced only by Viru potters, and we argue that its presence in Moche contexts is evidence of the numerous exchanges maintained by these two populations.

Hydraulic mills were introduced in the early colonial period in the Americas to grind wheat into flour. During the nineteenth and twentieth centuries, the rise of the agro-export model in Latin America shaped the development of a flour industry in which water-powered mills played a central role. Over time, these technologies were used not only to increase production for the export market but also to meet the needs of domestic consumption, both local and regional. In this context, in 2017 we began to investigate the characteristics of a hydraulic mill, currently in disuse, in the town of Payogasta in the province of Salta (Argentina), to determine its chronology and functionality. In addition to surveying the structure, we conducted excavations in the nearby rooms that were part of the site. We found that this mill was in operation between the end of the nineteenth and the end of the twentieth centuries, grinding wheat, corn, carob, and red bell pepper, and that the adjoining rooms were used to house the people who were waiting their turn to grind their raw materials.

The nineteenth century was a dynamic period for hacienda workers on the south coast of Peru. Former Jesuit vineyards with two of the largest enslaved African-descended populations in rural coastal Peru—the haciendas of San Joseph (San José) and San Francisco Xavier (San Javier)—and their annexes in Nasca's Ingenio Valley underwent dramatic transformations with the replacement of their grapevines with cotton and the introduction of new types of workers. Cantonese indentured workers were contracted beginning in the 1830s, and the majority-enslaved workforce was legally emancipated in 1854. Seasonally, highland Andean workers joined the demographically shifting permanent hacienda population. We use evidence from excavated midden contexts at San Joseph, San Xavier, and San Joseph's annex of Hacienda La Ventilla to explore these changing agroindustrial dynamics and worker well-being in the eighteenth and nineteenth centuries. Despite the transformations at the estates, we find that culinary practices developed by enslaved Africans and their descendants during the Jesuit administration, such as the preparation of one-pot meals and stews, continued into the republican era among Cantonese indentured laborers and wage workers of Indigenous, mestizo, and Cantonese origins. We argue that such strategies centered on foodways were a crucial aspect of worker self-care regimes and broader well-being.

Archaeological and ethnohistorical investigations in the south of the Colombian Plateau, in the Eastern Highlands, suggest that before European contact Guatavita was an important Muisca chiefdom—largely because of the prestige conferred by the presence of ceremonial centers in their territories, especially around the lakes in the hills surrounding the Guatavita-Guasca Valley. The fame of Lake Guatavita as the most important Muisca shrine was fueled by Spanish chronicles during the sixteenth and seventeenth centuries, which described it as the core of mass offering ceremonies or of lavish rituals for the chief's investiture, which fed both the story and the myth of El Dorado. This article presents the results of the archaeological survey done around the lake. The type and distribution of the material culture suggest that there was a shrine where small-scale ritual offerings took place, rather than conspicuous celebrations.

El área de Laguna del Diamante (3.000 m snm) tiene una oferta de recursos atractiva para las sociedades humanas durante los últimos 2.000 años. Este trabajo evalúa la variable intensidad en la ocupación humana en Laguna del Diamante en cinco segmentos temporales entre 2030 y 440 años cal aP. Estos segmentos se modelaron a partir de 14 fechados radiocarbónicos procedentes de tres sitios; la densidad de lascas proximales se evalúa como proxy de intensidad de ocupación. Se comparan los pulsos registrados arqueológicamente con la variabilidad ambiental vinculada a aumento/disminución de temperatura y humedad, de los últimos milenios en tres lagunas: Aculeo, Chepical y del Maule (33°-35°S). A partir de diversos indicadores —cobertura vegetal, extensión/disminución de la cubierta de hielo, cambios de la precipitación relacionados al sistema de vientos del oeste y su variabilidad debido a El Niño Oscilación del Sur— se observó en casi toda la secuencia una asociación positiva entre condiciones favorables y ocupaciones intensas. Se discute el registro de dos pulsos de mayor intensidad: entre 1200 y 1280 años cal aP, asociado con aumento de temperatura de verano e intensificación de precipitaciones; y entre 450 y 500 años cal aP, vinculado con condiciones frías y coincidente con la presencia incaica en el área.

Excavations at the Wacheqsa sector from Chavin de Huantar identified contexts from the Middle Formative (1100–900 BC) and Late Formative (900–550 BC) periods. We present results of starch analysis conducted in culinary equipment (ceramics) retrieved from domestic occupations and a large midden. Microbotanical analysis revealed a variety of plant food resources, such as maize, beans, olluco, and possibly chili peppers.

Coccidioidomycosis is an infectious fungal disease endemic in Bolivia's Gran Chaco region that is caused by inspiration of the spores of Coccidiodes species. It is a respiratory pathology that can spread to the skeleton and produce diffuse lytic lesions in different parts of the body. This disease has rarely been described in historic populations, and we present here a new case of coccidioidomycosis in a mummified human individual. It corresponds to a female individual with an age at death of 25–35 years, dated to the Tiwanaku epoch of the thirteenth century AD. It was found inside a sepulchral cave near the city of Ulloma in western Bolivia. Radiographic examination shows numerous osseous lytic lesions with central cavitation concentrated on the cranial table and vertebral bodies. The observed condition could correspond to the secondary phase of coccidioidomycosis. This diagnosis is noteworthy because coccidioidomycosis was mainly described as a male work-related disease and has never been found in ancient western Bolivia.

The distribution and hybridization of ceramic vessels provide insights into how local elites and imperial officials navigated imperial expansion. This article presents data on ceramic sherds from the sites of La Centinela and Las Huacas in the Chincha Valley that date to the period of Inca occupation (AD 1400–1532). In Chincha, the Inca established a style of joint rule in which Inca and local authority were closely aligned. The ceramic data demonstrate that Inca imperial designs and diagnostic shapes were most numerous in contexts associated with direct Inca presence and that the types of vessels and designs that elites used to develop their authority differed among the contexts: hybrid material culture thus varied throughout the Chincha Valley. These different hybrid material cultures include state-sponsored hybrid wares (Inca vessels, on which the Inca intentionally integrated Chincha designs) and local vessel shapes on which elites used Inca symbols and vessel shapes to assert their status to a mostly local audience.

Recent excavations at the ancient Maya minor center of Tutu Uitz Na in the Belize River Valley revealed an especially large—about 20 million shells—Middle Preclassic (900–300 BC) shell deposit underlying the plaza. Although marine shell species make up a small percentage of the assemblage, most shells are Pachychilus spp., a common freshwater snail known in the southern Maya Lowlands as jute. This report describes the architectural context and assemblage of the deposit and compares it to similar examples in the region. We propose that the Tutu Uitz Na deposit provides one of the earliest examples of depictions of the Maya primordial sea in an architectural context.