During the colonial era, southern Mendoza, Argentina, functioned as a frontier where indigenous and Spanish-speaking people interacted. Contact caused major transformations to indigenous economic, social, and political organization. Archaeological analysis is fundamental to understanding the characteristics of local indigenous populations that rapidly incorporated European products into their diets. Analysis of archaeological remains from the region, therefore, can cast light on important aspects of Spanish-indigenous interactions. The aim of this work is to describe the archaeobotanical record of Cueva de Luna—located in the Rio Grande Valley and containing occupations dated between ca. 3800 B.P. and European contact—and to understand how plants were exploited by the inhabitants of southern Mendoza. Preliminary analysis of the archaeobotanical record, consisting primarily of seeds and woody endocarps in a dry state of preservation, indicates the use of native wild taxa, among which algarrobo (Prosopis sp.), molle (Schinus polygamus), solupe (Ephedra), and jarilla (Larrea nitida) abound. American cultivars including beans (Phaseolus vulgaris) are also present. Significantly, the record includes Eurasian taxa, including wheat (Triticum sp.) and walnut tree (Juglans sp.). The Cueva de Luna record is important in this regard for it may correspond to the nineteenth century, when the area was inhabited by what may have been the last indigenous Pehuenche group preceding the current ranchers. Our results provide a basis for future work related to change and continuity in the prehistoric use of plants.

In the Maya region scholars have long noted the connection between solar alignments and radial pyramids at sites such as Chickén Itzá, Dzibilchaltún, and Uaxactún. Just. 26.5 km west-southwest of Chichén Itzá, the site of Ikil also contains a massive radial pyramid, known as Structure 1. In May 2011 investigations at Ikil revealed that this pyramid also figures in a solar hierophany-the sunrise over the pyramid's summit on the days of the solar zenith transit. What is unique, however, is that the observation point for this event is situated inside of a cave to the west of the pyramid. In this paper, evidence is presented that suggests the location of Structure 1 was dictated by the orientation of the cave, and that the physical and ceremonial linkage of these two landscape features created the cosmic hub of Ikil. Furthermore, it is argued that ceremonies marking the solar zenith-a day largely ignored in Euro-Christian calendars-would have been enacted by the ruling class as a way to formalize and sanctify the annual rebirth of the agricultural cycle, while publicly displaying their connection to the divine and thus legitimizing their position of high religious and social status.

Archaeological starch grains consistent with those produced and stored in modern cojoba (Anadenanthera peregrina) seeds were identified, for the first time in the West Indies, in a coral milling base recovered in a small precolonial habitation site of Eastern Puerto Rico, in a context dated to A.D. 1150-1250. Ethnohistoric, ethnographic, and previous archaeological data on cojoba from the West Indies and South America were surveyed in order to form plausible sociocultural interpretations of the findings. After experimentally assessing some ethnographic protocols that possibly replicate various ancient ways of processing cojoba seeds for producing hallucinogenic powders related to the so-called ritual de la cojoba, this report proposes that cojoba seeds were processed and used here mainly as an hallucinogenic complement to the healer for the divination of illness.

We contend that political structures emerge in the course of interpersonal dealings conducted by people organized within overlapping social networks. It is through these webs that resources needed to define and achieve goals and exert control over others are mobilized. Elites seeking to construct hierarchies and concentrate power must restructure the preexisting matrix of networks to redirect the flow of assets to their benefit. In doing so, they seek to create an affiliation that transcends loyalties to extant social groups while securing for themselves positions of preeminence within the overarching affiliation. Such social engineering involves manipulating the material symbols by which interpersonal ties are made tangible and imbued with emotional significance. The resulting political structures are less nested sets of stable territorial groups than dynamic networks of networks through which assets are deployed in the practices by which power is exercised. This perspective is used to describe Late Postclassic (A.D. 1300-1532) political processes in the Naco Valley, northwestern Honduras, calling attention to how power of various sorts took shape through complex relations among diverse people and varied things orchestrated within overlapping social networks. The implications of a network approach for studying political processes generally are also considered.

The research reported in this article explores Wari imperial strategies in the upper Nasca Valley of south-central Peru and, building on previous research, documents the flexibility and diversity of those strategies. The focus of these investigations is the site of Pataraya, a small Wari provincial outpost, and its environs. Despite its size, the rectangular enclosure at Pataraya is well planned and conforms to the canons of Wari state architecture documented at other Wari provincial sites. The site was founded early in the Middle Horizon (A.D. 650-1000) and then abandoned during the collapse of the Wari system. Extensive excavation at this condensed version of the Wari building tradition—over 60 percent—uncovered a pattern of spatially segregated use and access within the enclosure. Activities were relegated to specific patio groups with little replication of function, and the sectors themselves were connected by an astonishingly complex system of narrow corridors. The site appears to have been involved in the transfer of coastal products, especially cotton, to the sierra along an ancient road that is also associated with another much larger Wari compound and with the reorganization of an older local site near modern-day Uchuymarca, both of which were also documented during the project.