Building Monks Mound,Cahokia, Illinois,a.d. 800–1400

Abstract

Cahokia (a.d. 800–1400), located near the confluence of the Mississippi and Missouri rivers, was the largest settlement in ancient North America. Monks Mound occupies the center of Cahokia and provides both a modern and ancient focal point for the site. Past investigations of Monks Mound explored issues of mound chronology and use. Recent soil coring around the perimeter clarifies the geological context and degree of preparation necessary before the mound was built. The results suggest that the mound is not optimally positioned for stability and its location may ultimately accelerate deterioration. Moreover, evaluation of the mound features and fill indicates that maximization of the geotechnical potential of sediments was not a primary concern for the Cahokians. Although poorly engineered relative to modern standards, the suitability of the mound as a platform may have been secondary to other design choices made while building the largest single mound in ancient North America.     

The Construction and Use of Cahokia’s Grand Plaza

Abstract

Excavations were conducted in 1997 and 2004 along a 1200 m-long waterline corridor through the middle of the central plaza at Cahokia, the largest and possibly earliest Mississippian period (A.D. 1050–1350) population center in North America. These excavations provide a unique window into previously unknown aspects of the construction and use history of this singular monumental space. Built as the centerpiece of Cahokia’s city plan in the middle of the 11th century A.D., the plaza appears to have been more spacious than the most generous previous estimate. The labor needed to build one-quarter to one-third of this plaza may have exceeded 10,000 person-days. Once built, evidence points to the possible existence of a gallery of upright posts and small buildings in front of Monks Mound, the largest earthen pyramid in the center of the site complex. By the 13th century, domestic buildings appear to have lined the plaza edges.     

Implications of Plant Remains from the East Face of Monks Mound

Abstract

Flotation-recovered plant remains from a series of 11 sod block samples, 7 features, a limestone concentration, and a mass of organic debris provide insights into the construction of Monks Mound. The presence of uncarbonized seeds exclusively of annuals (other than those of perennial elderberry and wild grape, which probably represent food remains) indicates that the construction of Monks Mound was relatively continuous. The presence of quillwort megaspores and other indicators of wetlands provide additional data on how Monks Mound was constructed and where some borrow and/or sod blocks were likely obtained to construct at least part of this monument.     

THE BILTMORE MOUND AND HOPEWELLIAN MOUND USE IN THE SOUTHERN APPALACHIANS

Abstract

Biltmore Mound, located on the Swannanoa River in Asheville, North Carolina, was constructed over a Connestee phase habitation, the earliest evidence dating to about A.D. 300. Mound construction began sometime between A.D. 400 and 550, with the second to last mound stage constructed about A.D. 580–600. Because of the diverse contexts and the excellent preservation of faunal remains, we are able to provide some insights into Connestee ritualism at Biltmore Mound. The Biltmore Mound was a platform used to support large public structures for ritual and ceremonial activities. It was constructed of varying colored and textured soils from a variety of source areas that arguably had symbolic importance. The mound was primarily built out (rather than up) with several mantles that may have comprised a complete ritual cycle of mound construction.     

OYSTER DEMOGRAPHICS AND THE CREATION OF COASTAL MONUMENTS AT ROBERTS ISLAND MOUND COMPLEX,FLORIDA

Abstract

Anthropogenic coastal landscapes often incorporate shell, a durable remnant of subsistence activity. Collection, consumption, and even feasting can thus contribute to histories of site formation and mound construction. This research assesses how oyster consumption related to the creation of Mound A, a shell mound at the Roberts Island Shell Mound Complex in Citrus County, Florida, is differentiated from the instances of oyster consumption that resulted in the midden constituting the rest of the island. I compare the size of shell remains from mound and off-mound midden contexts to assess variation in the sizes represented across the samples, stratigraphic variation within each context, and evidence for directional change indicative of over-exploitation. I identify a relationship of dependence between shell size and stratigraphic depth in off-mound samples that does not appear in mound samples, suggesting a relatively short period of time for the accumulation of mound deposit oyster shells. The findings of this study point to mound construction at Roberts Island Shell Mound Complex as a distinct and deliberate activity, with the construction event likely sharing importance with the community aggregation and consumption that facilitated it.     

THE 1974–75 EXCAVATIONS AT MOUND BOTTOM,A PALISADED MISSISSIPPIAN CENTER IN CHEATHAM COUNTY,TENNESSEE

Abstract

Mound Bottom (40CH8) is a large complex of 14 prehistoric mounds located in a horseshoe-shaped bend of the Harpeth River, a tributary of the Cumberland, in Cheatham County, Tennessee. It, together with another mound group 3 km to the south known as the Pack site (40CH1), received sporadic archaeological attention during the first half of the twentieth century, but it was not until 1974 that systematic work was carried out at either mound center. Over portions of that and the following year, Mound Bottom was mapped in detail and excavations were carried out to document the range in variability of mound construction and community structure. Six mounds were tested and 19 houses were partially or totally excavated. House types included both single-set-post structures and wall-trench structures. Calibrated radiocarbon dates from Mound Bottom span about a 600-year period from the eighth through the fourteenth centuries.     

CONTINUING THE RESEARCH: ARCHAEOGEOPHYSICAL INVESTIGATIONS AT THE BATTLE MOUND SITE (3LA1) IN LAFAYETTE COUNTY,ARKANSAS

Abstract

The continuing use of archaeogeophysical methods at the Battle Mound site (3LA1) exemplifies the power of geophysics as a non-invasive, preservation-oriented, and economically feasible way to pursue the exploration of settlement patterning at the Middle and Late Caddo (ca. A.D. 1200–1680) mound site. Using these methods, a 1-ha (2.47 acres) area directly east of the large mound was surveyed using magnetic gradiometry and concatenated to the existing survey area. Results from the 1-ha survey provide further elucidation of the spatial structure and internal organization of the Caddo Indian occupation at the Battle Mound site.     

Mound ZZl,Nixtun-Ch'ich', Petén,Guatemala: Rescue Operations at a Long-Lived Structure in the Maya Lowlands

Abstract

Mound ZZl, located on the tip of the peninsular portion of the large lowland Maya site of Nixtun-Ch’ich’ in Petén, Guatemala, was investigated in 2007 during a salvage operation. An axial trench revealed a long sequence of activity in the area, beginning before 1000 B. C. and extending into the early 18th century. Early platform construction was accompanied by feasting and smashing of Middle Preclassic (1000—400 B.C.) pottery in a termination and/or dedication rite. The mound grew through the construction and reconstruction of numerous platforms and structures—and further episodes of termination and dedication—that primarily extended it laterally, rather than vertically. The location of Mound ZZl and its features—reincorporation of Middle Preclassic fill materials; secondary burials; clay figurines; protection by a large wall-ditch complex; pecked plaster symbols; and the presence of a Spanish mission church—suggest that it was a key civic-ceremonial component of the region's sacred landscape for nearly three thousand years.     

WHY WALL TRENCHES?

Abstract

Discussions of Mississippian architectural modes have dwelled too much on differentiating flexed-pole and rigidpost buildings, both of which were probably constructed throughout the Mississippian period (A.D. 1050–1350) in the greater Cahokia region. New evidence from recently excavated Richland Complex settlements suggests the innovation of a “curtain-wall construction technique” that, on the one hand, was based on a traditional interior truss structure and, on the other, permitted the prefabrication of exterior walls. Such a hybrid construction mode might have solved the immediate problem of new housing at late-eleventh-century Cahokia while adapting techniques familiar to local builders. Besides highlighting the importance of interior roof-support posts, our conclusion also means that greater attention to post-mold details is required using crosssectioning rather than post-scooping methods of excavation.     

Serpent Mound in its Woodland Period Context: Second Rejoinder to Lepper

The Serpent Mound in Adams County, Ohio, is probably the most widely recognized effigy mound in the world. Opinions differ, however, as to who built the effigy and when. Currently there are two conflicting positions. According to Lepper and colleagues (this volume and elsewhere) the effigy was built by people of the Fort Ancient culture circa AD 1070. According to the present author and colleagues, recently obtained radiocarbon dates and other data indicate that Serpent Mound was built much earlier, by people of the Adena culture, circa 320 BC.

In this article, evidence is presented that corroborates the earlier published radiocarbon dates suggestive of an Adena-era construction. This evidence includes a review of findings that real serpents were sometimes buried with Adena and Hopewell people and consideration of a relational complex reaching back to the Early Woodland—wherein the Great Serpent of Native American legend is associated with the journey of the deceased person’s soul, the star constellation Scorpius, and the Lowerworld. Together, these data provide an Early Woodland cultural and interpretive context for Serpent Mound and further corroborate the Adena-era radiocarbon dates for its construction.     

The Case of the Caldwell Mound: A Woodland Period Mound in the Central Scioto River Valley

ABSTRACT

This article presents a reconstruction and analysis of the Caldwell Mound located in the central Scioto River valley of southern Ohio. The mound contained a log tomb, at least four burials, and associated funerary objects. Four AMS radiocarbon dates place the Caldwell Mound within the last century BC and first century AD, and the mound contains evidence of practices historically associated with “Adena” and “Hopewell.” Few other records exist from this period in the region despite it experiencing perhaps some of the most dramatic socioreligious transformations in precolumbian North America. This analysis documents early evidence for the diversification and segregation of leadership roles based on the interpretation of three buried individuals. It also demonstrates the utility and efficacy of working with amateur-produced records and collections, even when incomplete, to reconstruct and glean insight from important Woodland period sites.     

DATING THE CONSTRUCTION OF EARLY LATE WOODLAND EARTHEN MONUMENTS AT THE JACKSON LANDING SITE IN COASTAL MISSISSIPPI

Abstract

Middle Woodland and early Late Woodland monuments generally have been interpreted as ceremonial spaces that integrated communities both within and among regions. This article presents information on the early Late Woodland component at the Jackson Landing site, a large site with a platform mound and semicircular earthwork, located on the Mississippi Gulf Coast. Earlier research is synthesized with more recent investigations of the mound to argue that the site’s monuments were built during the early Late Woodland period between approximately A.D. 400 to 700. Determining when Jackson Landing’s monuments were built is important because their construction provides a temporal baseline for regional and, perhaps, interregional social integration along the central Gulf Coast.     

A REASSESSMENT OF THE CHRONOLOGY OF MOUND A AT TOQUA

Abstract

The Toqua site (40MR6) is one of the most thoroughly excavated Late Mississippian mound sites in East Tennessee. The site has been a focal point of research on late prehistory in southern Appalachia, but there are issues surrounding its chronological placement. The radiometric dates obtained for the site in the 1970s and the archaeomagnetic dates reported in 1999 have large standard deviations. These dates are too imprecise to be useful for a temporal placement of the site that is clear enough for current discussions of the development of Mississippian culture. A newly obtained Accelerator Mass Spectrometry (AMS) date from the large platform mound (Mound A) allows a reevaluation of the occupation sequence of the Toqua site. This date provides an anchor for a refined chronology for Mound A. In addition to the new AMS date, this refined chronology is based on complementary lines of evidence, including architectural evidence, mortuary practices, pottery traditions, and shell gorget styles.     

Terra incognita: terrestrial LiDAR documentation of Mound A at Kolomoki (9ER1)

ABSTRACT

The manifest representation of space and place is essential to good archaeology. Our ability to document and relate these concepts, projected into the past and reflected in the present, has increased tremendously with the expansion and availability of technology. We present recent efforts to further document a well-known place in the cultural landscape: the Kolomoki site in southwestern Georgia, occupied primarily during the Middle and Late Woodland periods. Specifically, we summarize older investigations of Mound A, then present the results of recent terrestrial LiDAR documentation. Our work substantiates the claim that Mound A was the largest Woodland-period mound in Eastern North America in terms of overall volume.     

A Mississippian conflagration at East St. Louis and its political-historical implications

Abstract

A walled portion of the extensive Precolumbian civic-ceremonial precinct of East St. Louis, near present day St. Louis, Missouri, enclosed a cluster of as many as 100 small buildings or huts. The huts were associated with a walled ritual-residential zone or elite compound dating to the late Stirling phase (a.d. 1150–1200) and, importantly, were burned in a single conflagration. The burning of East St. Louis may have resulted from a ritual commemoration, an act of aggression, or an accidental fire; circumstantial evidence primarily supports the first scenario. With strongly diminished mound and architectural construction at the site in subsequent decades, and with the coeval disappearance of key ritual-residential buildings from the regional landscape after the burning, the ancient East St. Louis fire was part of a larger pattern of historical events that mark a downward turning point in the social and political history of Greater Cahokia.     

Exploring Oyster (Crassostrea virginica) Habitat Collection via Oxygen Isotope Geochemistry and its Implications for Ritual and Mound Construction at Crystal River and Roberts Island,Florida

Research at Crystal River and Roberts Island Shell Mound Complex, on the western coast of Florida, USA, offers a quantitative assessment of the temporality of shell deposit construction, Native subsistence practices, and mobility patterns through stable oxygen isotope data from eastern oyster (C. virginica). The δ¹⁸O_water values of oysters vary synchronously with salinity, assuming relatively constant δ¹⁸O_water/salinity gradients since the time of occupation, allowing for an examination of shifts in oyster habitat exploitation over time. Our previous (Thompson et al. 2015) study indicated that midden accumulation occurred throughout the year, while oysters from mound deposits were collected in colder months. New data indicate that in addition to differential season of collection, habitat exploitation also varied. During early occupation at the site, oysters were collected primarily from lower saline habitats, while in later phases oysters were obtained from higher salinity waters; we relate this to a lower sea level and concomitant settlement shift seaward. Additionally, oyster from later mound contexts was collected from higher saline habitats relative to those in midden contexts; Native people may have targeted specific bioherms at certain times for the year for feasting-related mound construction.     

On the Age of Serpent Mound: A Reply to Romain and Colleagues

Radiocarbon dates reported by Romain and colleagues (2017) suggesting that Serpent Mound (33AD1) is an Adena effigy mound are problematic because they cannot be linked reliably to cultural activities associated with the original construction of the effigy mound. Additional arguments offered by Romain and colleagues (2017) in support of an Early Woodland age for Serpent Mound also are unconvincing. A Late Prehistoric age for Serpent Mound is supported by the radiocarbon dates reported previously, new radiocarbon dates, the relative abundance of serpent imagery in the Fort Ancient culture and the contemporaneous Mississippian Tradition, the virtual absence of serpent imagery in the Adena culture, and the fact that, whereas effigy-mound building is otherwise unknown in the Early Woodland period, it is well documented, if rare, for the Fort Ancient culture and in the not-so-terribly-far-away upper Midwest it is so common that it defines the broadly contemporaneous Effigy Mound culture.     

Evaluating the Reliability of Fluoride Dating at Two Prehistoric Mound Sites in Mississippi

Abstract

Ion-selective electrode fluoride dating is used to address chronological problems at two mound sites located in Mississippi. At the Mississippian period (A.D. 900–1520) Lyon's Bluff site, 220K520, the fluoride content of deer and human bone is compared with radiocarbon dates and stratigraphic levels to evaluate the reliability of the fluoride dating method for understanding relative burial chronology. At a second site, Pocahontas Mound A (22HI500), fluoride content of deer bone is used to corroborate radiocarbon dates and to establish the proper chronology of levels associated with two distinct occupations (Archaic and Coles Creek/Plaquemine) identified in a large midden area. Fluoride analysis also is used to date a second midden area at this site. For Lyon's Bluff; fluoride dates did not correspond with accelerator mass spectrometry (AMS)-dated burials and midden strata. In contrast, fluoride dating proved very useful in determining chronological placement of midden levels and dating other areas at Pocahontas Mound A. Sample age, site location, soil, and bone preservation are considered as possible causes for the negative results at Lyon's Bluff.     

Mississippian monumentality in the Yazoo Basin: recent investigations at the Carson site (22CO505), northwestern Mississippi

Investigations at the Carson site (22CO505), located in Coahoma County, Mississippi, have uncovered data on the development of a large Mississippian mound center dating to the period from A.D. 1200 through European contact. Recent sediment coring, excavation, artifact analyses, and radiocarbon and optically stimulated luminescence (OSL) dating shed light on earthworks and household structures at Carson, and on Mississippian culture in the Yazoo Basin more generally. Sediment coring demonstrates a laterally transgressing Mississippi River system deposited coarse sandy ridges and clay-filled swales underneath a surface horizon comprised of variously coarse to medium-fine sediment originating from generalized overbank flooding. In some instances, flood-borne sediments were found on mound flanks, indicating that at times river-based flooding may have interrupted mound construction. Sediment coring and trench excavation also demonstrate that Carson’s Mound D was built in four stages, with Stages II and III comprising the major stages of earth moving. Excavations on the mound summit reveal evidence of several superimposed structures that were burned in place and likely used for the production of stone, shell, and wooden craft items, perhaps related to Mississippi Ideational Interaction Sphere (MIIS) paraphernalia. Here we describe recent investigations at Carson and present preliminary findings; forthcoming publications will emphasize strategies of power, monumentality, craft production, and Mississippian exchange systems.     

Site preservation at Gordian,an Iron Age city in Anatolia

Abstract

Since excavations began at the Citadel Mound of Gordion in the 1950s, the site has been exposed to the extreme weather conditions of Central Anatolia. The architectural remains, including a unique palace quarter and citadel, are deteriorating to the extent that the legibility of the site is threatened.

The excavated area within the mound, comprising more than two hectares, is too vast to be covered by protective sheltering given the current budget. Conventional backfilling is also precluded, as this would obscure key topographical elements of the site and distort the stratigraphical context of the city within its surrounding citadel.

To preserve the site under these conditions, a technique of sandbag buttressing and clay capping has been implemented at Gordion. Using locally available materials, this system of interpretive stabilization not only preserves the architecture of the ancient city within its stratigraphical context, but improves the legibility of the site as a whole.