Cantabrian Region Research Articles

A step back to move forward: a geological re‐evaluation of the El Castillo Cave Middle Palaeolithic lithostratigraphic units (Cantabria, northern Iberia)

AbstractEl Castillo Cave is one of the most important sites for understanding the Middle and Upper Palaeolithic in Europe. Despite its importance, the absence of a widely used stratigraphic section with detailed lithostratigraphic descriptions and correlations between the different geological and archaeological interpretations has led to confusion in the correct identification of lithostratigraphic units in the lowermost, Middle Palaeolithic sequence. This study establishes a new lithostratigraphic framework for the site, which can be accurately correlated to previous geological and archaeological studies and generates a solid working basis for framing the Mousterian of El Castillo Cave in the Cantabrian region and southwestern Europe. The geological re‐evaluation of Unit XX (‘Mousterian Alpha’) has expanded its chronology, now ranging from 49 130–43 260 cal bp to 70 400 ± 9600 bp. Unit XXII (‘Mousterian Bet’) would consequently yield an age older than 70 400 ± 9600 bp and younger than the underlying speleothem (Unit XXIIIb), dated to 89 000 +11 000/‐10 000 bp.

Towards more sustainable tourism under a carbon footprint approach: The Camino Lebaniego case study

From an economic point of view, the tourism sector is one of the most important in the world with religious tourism, such as pilgrimages, being a growth area. Tourism activities also make a significant contribution to CO2 emissions (roughly 8% of the world's carbon emissions). In this framework, the main objective of this research is to develop an integrated sustainable model by assessing the impact of pilgrimages to the Camino Lebaniego (Lebaniego Way) in the Cantabrian region, which is one of the most popular routes in northern Spain. To do this, it is necessary to quantify the environmental impacts of this activity since this is a key element in establishing appropriate and effective environmental management programmes. This study uses the Life Cycle Assessment (LCA) method, focused on the Carbon Footprint (CF) impact category, to assess the greenhouse gas (GHG) emissions of this activity considering ‘a pilgrim who completes the route in three days’ as the selected functional unit (FU). In addition, the sub-sectors of accommodation, food and beverages, and waste management are taken into account. Following this route generated a total of 13.69 kg CO2 eq./FU, of which accommodation and the services offered there contributed almost 71.47%, food was 17.08%, and waste management 11.45%. The evening meal and propane consumption were the hotspots in the hostel, accounting for almost 74% of the total impact, so alternatives were proposed to reduce the impacts associated with these. In terms of transport, it was found that for the same destination, it was better to use a car rather than a plane, because the associated CO2 emissions were lower. Finally, these aspects are discussed and improvement measures for reducing GHG emissions are proposed, involving the introduction of good practices and environmental commitments from the pilgrims themselves, as well as enterprises and local communities. Ecolabels and environmental certifications should become a key tool for sending this signal to the market as should the use of public transport to the destination, among other actions. Ultimately, religious and nature tourism seems to be on the upturn, and it is likely that pilgrimage routes could be the next post-COVID travel trend.

Systematization of butchery processes during the last Glacial Maximum in the Cantabrian region, a view from La Lluera cave (Asturias, Spain)

Taphonomic studies explain the processes of formation and accumulation of bone assemblages, with special emphasis on anthropic activity. During the last decades, the number of these studies has increased notably in the sites of the north of the Iberian Peninsula. It is known that Upper Paleolithic hunter-gatherer groups had a prominent role in bone accumulations documented at archaeological sites. However, the manner these communities processed animal resources has gone unnoticed. In this work, with the aim of determining whether there were specific behavioral trends in terms of disarticulation and bone defleshing, it is analyzed how the groups that occupied La Lluera (Asturias, northern Spain) during the Solutrean and Magdalenian periods took advantage of the hunted resources. Finally, we show that Upper Paleolithic hunter-gatherer communities at La Lluera show a notable degree of systematization of animal processing.

Quartzite procurement, not only in fluvial deposits: raw material characterisation of the lithic assemblage from Level XXII-R at El Esquilleu, Cantabrian Region, Spain.

The consideration of quartzite as a secondary raw material has relegated in-depth research of this raw material in favour of such other rocks as flint or obsidian. The latter two are the most researched raw materials because of the information derived from their study: long-distance transport of rocks and mobility of people. In contrast, information obtained from research into quartzite generally supported near-site procurement areas mainly related to secondary river deposits. Together with the wide range of rocks called quartzite by archaeologists, this has influenced the poverty of research on the second most-often used raw material during the Palaeolithic. To overcome this narrow perspective, it is necessary to put quartzite in the centre of the debate as a raw material, using an inductive proposal based on geoarchaeological methodologies.
 This issue is approached by the application of a geoarchaeological methodology that combines thin section analysis, stereomicroscope observation, and X-ray Fluorescence compositional analysis of the quartzite from Level-XXII-R at El Esquilleu. Potential areas where quartzite could be procured, especially river beaches, are also characterised here. The results show complex mechanisms of quartzite acquisition based on intensive and selective searching, not only in proximate river deposits, but also in more distant fluvial deposits and conglomerate formations. Finally, in combination with techno-typological criteria, complex mechanisms of exploitation are proposed. These depended on each quartzite type, which promoted not only lithological but also technological variability. All these data open new perspectives for the characterisation of the second best represented raw material in Europe, as well as for understanding acquisition mechanisms in fluvial deposits and conglomerate formations.

Landscape dynamics and fire regime since 17,550 cal yr BP in the Cantabrian region (La Molina peat bog, Puente Viesgo, Spain)

Our aim with this paper is to provide insight into the landscape dynamics of the Cantabrian region (northern Iberian Peninsula) from the Last Glacial Period to the present. We present a multiproxy approach performed in a sedimentary record from La Molina peat bog, located at 484 m a. s. l. in Puente Viesgo, Cantabria (Latitude: 43.26° N; Longitude: 3.97° W), that covers the last c. 17,550 years. Analyses were performed on the organic matter, pollen and sedimentary charcoals, which have been used to characterise the fire regime at a local level. The results revealed a steppe-like formation from the basis of the sequence to the Bølling-Allerød chronozone, when the spread of woody species is detected. The dry and cold conditions of the Younger Dryas caused the decrease of mesophilous taxa until the onset of the Holocene. From that point onwards, a mixed deciduous formation composed of Betula and deciduous Quercus was established in the region. Besides, a series of biomass pulses was detected during the early Holocene, probably linked to intervals of increased rainfall. Fire episodes detected at the 9.3 and the 8.2 ka events created forest openings and probably favoured the establishment of Corylus, most likely also helped by a climate shift. There was a lack of fire activity until the Neolithic, when the fire signal increased probably linked to grazing and agricultural practices and triggered deeper changes in the Cantabrian plant landscape structure.

To be or not to be: reassessing the origins of portable art in the Cantabrian Region (Northern Spain)

The characterization of the first portable artistic depictions in Cantabrian Spain is crucial for comprehension of the symbolic development of Neandertals and Homo sapiens in the context of the passage from the Middle to the Upper Paleolithic. However, despite the importance of these first graphic representations, their study has tended to lack the application of suitable methodologies to be able to discriminate between graphic activity and other kind of alterations (use-wear, taphonomic, or post-depositional). The present study has examined a significant sample of Middle and Upper Paleolithic lithic and osseous objects from Cantabrian Spain that have been cited as evidence of graphic activity in the literature. The contexts in which the objects were found have been considered, and the objects have been analyzed through the microscopic observation of the marks to distinguish between incisions, pecking, and engraving made for a non-functional purpose (graphic activity) and those generated by diverse functional actions or taphonomic processes (cutmarks, trampling, root marks, percussion scars, and use-wear). The results show that some regional Middle Paleolithic osseous objects display incisions that are neither functional nor taphonomic and whose characteristics are similar to graphic evidence attributed to Neandertals in Europe and the Near East. In turn, the first portable art produced by Homo sapiens in the Cantabrian Spain seems to be limited mostly to linear signs, and no figurative representation can be recognized until the Gravettian. This appears to indicate a particular idiosyncrasy of the region in the Early Upper Paleolithic, which, in comparison with other regions such as south-west France and the Swabian Jura, shows a later and less abundant production of portable art.

Child burials in domestic contexts at an Iron Age hillfort: The Oppidum of Monte Bernorio (Villarén, Palencia)

The practice of child burials underneath house floors in the Late Prehistory has been considered a characteristic trait of the Iberian religion. However, this custom has also been documented in different archaeological sites both in the Mediterranean and Central Europe as well as Celtic areas of the Iberian Peninsula, so we can explain this funerary practice by an Indo-European origin. We report the archeotanatological and osteoarcheological study of 10 subadults found in the Iron Age site of Monte Bernorio oppidum, the first archeological site in the western and central Cantabrian region with this funerary rite documented. It is the confirmation of both, the survival of an ancient funerary ritual, widely extended in all Europe, and its presence in the north of the Iberian Peninsula. We also review all the archeological sites in the Iberian Peninsula with similar archeological contexts and analyse the rite from the bioarcheology of the care.

Teixedos no noroeste da Península Ibérica

The description of Habitat 9580* of the Natura 2000, namely in the Iberian NW, needs more phytosociological information to facilitate its interpretation. Until now, this interpretation is done mainly by listing the numerous syntaxes with confirmed presence of Taxus baccata. By the lack of releves of Taxus communities as the interpretation of the yew woods as simple faciations of the surrounding forests, this interpretation becomes inconsequent, as in most cases, correspond to more or less isolated individuals within other communities and not to true yew woods, i.e. (co)dominated by Taxus baccata (Habitat 9580*). Based on a DiffVal analysis of 33 releves from the NW Iberian Peninsula of yew communities it was possible to differentiate and classify three new forest communities (co)dominated by Taxus baccata. In the Lusitanian territories are distinguished the Juresian Eryngio juresiani-Taxetum baccatae subass. typicum, and the very rare Eryngio juresiani-Taxetum baccatae subass. loniceretosum hispanicae from Serra da Estrela; while in the W Cantabrian region, yew communities are clearly differentiable from the Lusitanian ones, the name Corylo avellanae-Taxetum baccatae is proposed.

Evidence of habitual behavior from non-alimentary dental wear on deciduous teeth from the Middle and Upper Paleolithic Cantabrian region, Northern Spain

The use of ‘teeth as tools’ (non-masticatory or cultural-related dental wear) has largely been employed as a proxy for studying of past human behavior, mainly in permanent dentition from adult individuals. Here we present the analysis of the non-masticatory dental wear modifications on the deciduous dentition assigned to eight Neanderthal and anatomically modern human subadult individuals from Mousterian to Magdalenian technocultural contexts in the Cantabrian region (Northern Spain). Although preliminary, we tentatively suggest that these eight subadults present activity-related dental wear, including cultural striations, chipped enamel, toothpick grooves, and subvertical grooves. We also found evidence of habitual dental hygienic practices in the form of toothpicking on a deciduous premolar. Orientation of the cultural striations indicates similar handedness development as in modern children. Taken together, these dental wear patterns support the participation of young individuals in group activities, making them potential contributors to group welfare. This study potentially adds new evidence to the importance of the use of the mouth in paramasticatory activities or as a third hand throughout the Pleistocene, which can be confirmed with a more specific reference sample.

The unevenness of the north Iberian crustal root, a snapshot of an elusive stage in margin reactivation

AbstractCrustal roots are identified in collision chains worldwide. Frequently mirroring the summits of mountain systems, they elegantly encapsulate the concept of isostasy. The rugged topography of northern Iberia results from convergence with the European plate during the Alpine orogeny that formed the Pyrenean-Cantabrian mountain range. From east to west, the range comprises three distinct parts: the Pyrenees, the Basque Cantabrian region, and the Cantabrian Mountains. The identification of the Pyrenean root in the 1980s and the observation of a similar geometry beneath the Cantabrian range in the 1990s gave place to the current view of crustal thickening as a continuous feature, resulting from the northward subduction of Iberian crust. Recent developments in rift architecture have delivered a complex rifting template for the area prior to convergence, and contrasting views based on two-dimensional restorations have led to a debate over its evolution. A crucial geophysical constraint is Moho topography. Using two different data sets and techniques, we present the most accurate Moho surface to date, evidencing abrupt changes throughout the orogen. The complexity of hyperextended margins underlies the current Moho topography, and this is ultimately transferred to the nonuniform orogenic pattern found in northern Iberia.

After the Last Glacial Maximum in the refugium of northern Iberia: Environmental shifts, demographic pressure and changing economic strategies at Las Caldas Cave (Asturias, Spain)

The Late Upper Palaeolithic of Europe, particularly the Last Glacial Maximum (LGM: 26-19 kyr cal BP), was a time of dramatic climatic changes. Fauna, and the humans that preyed on them, were forced to adapt their behaviours in response to climate changes to survive. The Cantabrian Region of northern Spain was continuously inhabited during this period when many other areas of Europe were inhospitable. The site of Las Caldas (Asturias) was repeatedly occupied by hunter-gatherers during the Solutrean (26.1–20.3 kyr cal BP) and Magdalenian (18.5–14.3 kyr cal BP). This paper uses δ13C and δ15N stable isotope analysis of red deer (Cervus elaphus) and Spanish ibex (Capra pyrenaica) remains to reconstruct past environments, ungulate niches and habitats, and to understand how this impacted on their availability as a prey source. Results show that during the Solutrean, cold and potentially wet LGM conditions were experienced and ibex lived in lower altitudes, likely due to reduced vegetation, and even small glaciers on the higher mountain slopes. Improved environmental conditions in the Magdalenian allowed ibex to live in their preferred habitat of higher altitudes. Ameliorated Late Glacial conditions correspond with changing economic hunting strategies at the site. Humans exploited wider ecological zones, over larger distances, which coincides with population growth, and greater connectivity across the Cantabrian region. This research highlights the importance of characterising the complex interactions between humans, animals and environments during the Late Pleistocene and how they responded to rapidly changing environmental conditions.

Hydrochemical evolution of the Reocín mine filling water (Spain).

The Reocín mine is located in Cantabrian region, in northern Spain. Its exploitation ended in 2003 due to the exhaustion of its reserves. In November 2004, the controlled flooding of the openpit began. During this process, both the qualities of stored water and piezometric levels have been monitored to control the possible water detraction from the Saja-Besaya hydrographic system. This paper deals with the water chemistry analysis of the pit lake surface, as well as the different conditions of the area. Geological and hydrogeological contexts play an important role in the lake water chemistry. The lake water quality continues improving. The sulphate content and zinc concentrations are already below the permitted pouring limits. Three factors are distinguished: the washing of the mine shafts is completed; the water supply from the aquifer contributes to the dissolution of the salt content and the bedrock, and dolomite, which neutralizes acid waters and improves the water quality during the flooding process with a pH value of 8. Owing to these conditions, the stored water meets the necessary conditions for discharge and provides the opportunities to use it.

A chrono-cultural reassessment of levels III-V from El Cuco rock-shelter: a new sequence for the late Middle Palaeolithic – early Upper Palaeolithic boundary in the Cantabrian region (northern Iberia)

The Iberian Peninsula is one of the key areas for studying the last populations of Neanderthals and the arrival in Europe of the first anatomically modern humans. In the Cantabrian region, this process can be traced in just a few sites with levels dating to the final stages of the Middle Palaeolithic and the earliest phases of the Upper Palaeolithic. One of these singular enclaves is El Cuco rock-shelter, where the sequence was initially dated by 14C only to the early Upper Palaeolithic sensu lato. However, new studies and datings now place this archaeological sequence in the late Mousterian and the Aurignacian. In this article we present a chrono-cultural reassessment of the upper levels of El Cuco (III-V), including a study of the large mammals. Levels Vc and Vb (>43.5-40.5 ky uncal BP) date from the late Mousterian, whereas levels Va, IV and III (c. 36.5-30 ky uncal BP) cover an interval extending at least from the Early Aurignacian to the Evolved Aurignacian. Particularly noteworthy is the discovery in level Va of a set of decorative beads made from marine shells in a context of possible symbolic behaviour.

The diffusion of maize in the Cantabrian region and its economic and demographic consequences during the Ancient Regime

AbstractThe cultivation of maize for human consumption started to spread through the Cantabrian region around the end of the sixteenth century. The adoption of the new crop was encouraged by the advent of the Little Ice Age, and the resulting crisis of subsistence, which forced Cantabrian peasants and farmers to search for alternatives to wheat. The importance of maize increased steadily and by the nineteenth century it had become the most important crop grown in the region. This had a number of economic and demographic consequences. In particular, it allowed peasants to produce a surplus that enabled them to become more involved in local and regional markets, providing an essential profit for otherwise precarious farm economies; and it encouraged such markets to become more integrated and more flexible in character. This article explores these issues by focusing on the case of Gipuzkoa, an area with a large amount of previously unused documentary sources.

Lithic raw material in the Cantabrian region: Dialectical relationship between flint and quartzite in the Palaeolithic record

The increase, in quantitative and qualitative terms, of research attending to the geological nature of rocks found in archaeological contexts is changing our perspectives about social and economic territories articulated by Palaeolithic societies in the Cantabrian Region. Practically the only raw material researched in a solid geoarchaeological approach in this area is flint. This paper addresses how the near absence of in-depth geoarchaeological research into raw materials other than flint is modifying our perception of the procurement and management mechanism of raw material in the Cantabrian Region during the Palaeolithic.
 To consider this matter in depth, we present the bibliographic and quantitative analysis of 30 representative archaeological sites from the Cantabrian Region whose assemblages were described lithologically using basic and primary categories. The state of play depicts a geographic distribution of raw material in the Cantabrian Region where quartzite is associated with the western sector and flint with the east. Interconnected with this axis, there is a chronological tendency that promotes standardisation in the use of flint by Palaeolithic societies following a chronological order, from the older to the more recent periods. This information, and its contextualisation with the new perspectives resulting from the application of the geoarchaeological proposal used to understand flint procurement, allows us to understand the general tendencies of raw material distribution of the region. Especially, we can detect how the absence of geoarchaeological methodologies of other raw materials than flint has modified the perception of the economic and social dynamics articulated around raw material by Palaeolithic people. This bias does not only affect the geographical and chronological axes, emphasising information from the regions and periods where flint is represented, but also promotes the over-interpretation of long-distance procurement, therefore, building up narratives exclusively based on human mobility.
 This situation has generated an incomplete and unbalanced picture of the procurement and management strategies followed by Palaeolithic societies because quartzite, the second most-often used lithic raw material, and other raw materials have only been studied using geoarchaeological methods within the last few years. This research finally points to the continuation of in-depth research of quartzite and other raw materials as the next steps to re-interpret the current paradigms about procurement and management of raw material by Palaeolithic societies, and, therefore, modify our perspectives of social and economic territories.

Phylogenetic study and taxonomic update of Chondrina (Gastropoda, Pulmonata, Chondrinidae) in the Cantabrian Mountain region (Iberian Peninsula)

This study revises the taxonomy and species limits of Chondrina taxa living in the Cantabrian mountain region of N Spain, based mainly on molecular data but supplemented with morphological data. One new species C. cantabroccidentalis Somoza-Valdeolmillos & Vázquez-Sanz sp. nov. is here described as the species of the genus living in the western Cantabrian Mountains. In addition, we propose new subspecies divisions for C. kobelti, namely C. k. kobelti and C. k. ordunensis, living to the west and east of Picos de Europa, respectively. Both subspecies are well distinguished according to their DNA profiles and morphology, and several hybrid populations have been identified in the contact zone. Finally, the species limits of C. cliendentata and C. kobeltoides are redefined and phylogenetic relationships among all these taxa and their closest relatives analysed by multilocus DNA sequencing. http://zoobank.org/urn:lsid:zoobank.org:pub:0E2652FE-39C2-4A70-B8D5-5F9E1114AAED

Quartzite procurement in conglomerates and deposits: Geoarchaeological characterization of potential catchment areas in the central part of the Cantabrian Region, Spain

AbstractRaw material characterization in Paleolithic archaeology has widened our knowledge of Middle Paleolithic societies. Procurement of raw material, specifically flint, has allowed the tracing of the mobility of both stones and people, as well as selective processes to obtain specific types or even extraction activities. The analysis of quartzite has also developed in recent years, providing an opportunity to better understand prehistoric societies. This study characterizes the procurement strategies implemented by Middle Paleolithic people in the mountainous region of the Picos de Europa. To this end, we present a comprehensive characterization of potential catchment areas: massive outcrops, conglomerates, and river deposits. The exploitation of quartzite at the sites of El Habario and El Arteu allows us to understand the territorial management of this mountainous area through the combination of selective processes and mobility mechanisms in lower and middle altitudes. These perspectives enable us to view the mountainous region not as a barrier but as an environmental mosaic managed by Middle Paleolithic groups. This study shows strategies that bring together direct and embedded procurement based on both intensive and extensive searches. These discourses are more closely related to the daily life of people than those only considering the mobility of people and objects.

Arte parietal paleolítico en la cueva de Aitzbitarte V (Errenteria, Gipuzkoa): un nuevo conjunto diacrónico en la Región Cantábrica oriental

El arte parietal paleolítico de la cueva de Aitzbitarte V se descubre en 2015, en el marco de las labores de prospección desarrolladas en la última década en el oriente cantábrico. Hemos documentado una decena de grabados situados en tres sectores profundos de la cavidad y compuestos por representaciones de bisontes y líneas. Las características formales de los primeros son específicas del arte gravetiense en el caso de los sectores A, C y D, y del Magdaleniense en el sector B. En ambos casos las convenciones gráficas presentan paralelos continentales, con el S/SO francés en el primer caso, y con los conjuntos pirenaicos en el segundo. De esta manera, en la cueva de Aitzbitarte V se identifican dos fases decorativas correspondientes a dos periodos distantes en el tiempo, siendo el primer caso de recurrencia gráfica reconocido en la Región Cantábrica oriental.

Interconnected Magdalenian societies as revealed by the circulation of whale bone artefacts in the Pyreneo-Cantabrian region

Coastal adaptations of Palaeolithic foragers along the north Atlantic seaboard have received renewed attention in the last decade and include growing evidence for exploitation of whale bone by Late Glacial Magdalenian groups to the north of the Pyrenees. Here we present a systematic revision of Magdalenian osseous industries from the Cantabrian region designed to explore whether this phenomenon was more widely shared by hunter-gatherer groups along the Atlantic coast of the northern Iberian Peninsula. Fifty-four whale bone objects were identified from 12 of the 64 sampled sites. Essentially represented by large, finished weapon elements (projectile points), these objects are primarily associated with the middle phase of the Cantabrian Magdalenian, and overlap slightly with the beginning its upper and probably the end of its lower phases. More broadly, the circulation of these objects evinces regular, long-distance (ca. 600 km) communication networks operating on both sides of the current French and Spanish Basque Country between 17.8 and 15 cal ka BP. The structure of this network poses interesting questions concerning potential social and/or economic interactions between Magdalenian groups from the Pyrenees and neighbouring Cantabrian region. We suggest that the use of whale bone by these particularly mobile hunter-gatherer groups for the production of hunting weapons was connected to the longer use-life afforded by the large size of this particular raw material. This choice potentially reflects attempts to offset raw material transport costs by privileging their regular maintenance rather than the replacement of hunting weaponry. This growing body of evidence for the exploitation of marine resources during the Magdalenian further reinforces the Bay of Biscay being the backdrop to the emergence of the first regular, diversified and organized coastal economies at the end of the Last Glaciation.

Un bastón multiperforado de la ocupación del Magdaleniense Final de la cueva Aizkoltxo (Mendaro, Gipuzkoa)

La cavidad de Aizkoltxo se encuentra junto a la orilla del río Deba, próxima a otras cavidades con ocupaciones del Magdaleniense Superior-Final (Agarre, Ermittia, Praileaitz I y Urtiaga). A consecuencia de la actividad de furtivos se decidió realizar un sondeo para evaluar la estratigrafía del yacimiento y contextualizar los restos recuperados. En el curso de dichos trabajos se identificó un nivel atribuible al Magdaleniense Superior-Final, cuyo proceso de formación es poco habitual. En él, además de una abundante industria lítica y ósea datada en 14864-14160 cal BP se localizó el bastón que describimos, que conserva al menos cuatro perforaciones y que está profusamente decorado con motivos figurativos (un ciervo en visión frontal, y dos astas de ciervo además de dos équidos o, quizás, lepóridos) y signos (trazos simples, ahusados, Vs embutidas, Vs paralelas, etc.). Este excepcional objeto, junto a otros frecuentemente señalados, corrobora la estrecha relación de los yacimientos de la Cornisa Cantábrica con los del Golfo de Bizkaia, Pirineo Occidental y Central.