Coast–inland mobility and diet in the Danish Mesolithic and Neolithic: evidence from stable isotope values of humans and dogs

Here we present the stable isotope ratios of carbon and nitrogen measured in bone collagen extracted from humans, dogs, herbivores and fish from Mesolithic and Neolithic coastal and inland sites in Denmark. Bones of freshwater fish from several Early Mesolithic lake-side sites have δ¹³C values surprisingly similar to those seen in marine fish. We propose a model, based on δ¹³C and δ¹⁵N, for the correction for both marine and hard water reservoir effect in radiocarbon dates. A strong reliance on aquatic protein is demonstrated for the Mesolithic inhabitants of the region from the middle of the Early Mesolithic onwards. A significant part of the protein in the diets of the dogs and humans from the Middle and Late Mesolithic was of marine origin, even at inland sites. This observation points to a high degree of (seasonal) coast-inland mobility. The isotopic evidence indicates that during the Neolithic small quantities of aquatic foods were still common sources of dietary protein.     

LATE NEOLITHIC STENILDGÅRD GRAVE: RE-EXCAVATED,RE-ANALYSED AND RE-INTERPRETED

Occasionally, it becomes possible to re-excavate and re-analyse prehistoric monuments. Within the geographical area managed by Vesthimmerlands Museum, this happened in the case of the Late Neolithic Stenildgård grave on the western periphery of the town of Aars, Northern Danmark. The grave was excavated for the first time at the early 1930s and re-excavated in 2015 in connection with the construction of a ring road around the southern parts of Aars. In 2015, a series of state-of-the-art scientific analyses were conducted in relation to this grave. Following a detailed presentation of the original publication and later interpretations, this article presents the results of the new excavation and scientific analyses. The new results include identification of the human bones, the development of the stratigraphy, strontium isotope analysis, pollen analysis, macro-fossil analysis, and the analysis of pitch. Since the 1930s, the Stenildgård grave has been considered a burial, which, to a great extent, deviated from usual practice showing one of the earliest examples of cremation in prehistoric Denmark. Furthermore, the recent investigation revealed that the grave was equipped with a surrounding wooden structure and possibly influenced by West European Bell Beaker Cultures. Also, the grave seems to form part of an extensive Late Neolithic burial and settlement system, where complex rituals were carried out.     

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A laboratory cave for the study of wall degradation in rock art caves: an implementation in the Vézère area

The aim of this proposal is to present an original approach to the study and preservation of rock art caves. A multidisciplinary study of cave wall alteration will be performed to understand the impact of environmental context on the evolution of wall surfaces. The approach involves the choice of a cave with characteristics similar to painted caves in the studied area (Vézère Valley in Dordogne, France): e.g., cave wall alteration, lithology, morphology, etc. This selected cave is intended to become a laboratory cave, monitored for the acquisition of chemical, physical and biological environmental data on bedrock, air and fluids along with their characteristics. A cave without art or archaeological interest has been chosen specifically to conduct experiments, to make in situ analysis and to obtain samples. The results are to be completed by specific observations in several other caves and compiled in a database.