Selective deposition – the intentional deposition of specific objects at particular locations in the landscape without the aim to later retrieve these objects – is a widely studied phenomenon from the Neolithic until the Early Middle Ages...
moreSelective deposition – the intentional deposition of specific objects at particular locations in the landscape without the aim to later retrieve these objects – is a widely studied phenomenon from the Neolithic until the Early Middle Ages in Europe. Apart from the study of the socio-cultural mechanisms and impacts of this practice, the siting of selective depositions in the (paleo)landscape has been studied in many recent publications from north-western and northern Europe.
In the Netherlands particularly the siting of selective depositions in the area of the Bourtanger Moor (a former raised bog landscape) and the adjacent Hondsrug (a subglacially-formed ridge from the Saalian glacial) was investigated meticulously for the Middle Neolithic (Wentink 2006) and the Iron Age (De Vries 2015; 2016). However, a landscape-scale analysis of the siting of selective depositions from the Late Neolithic and Bronze Age had not been conducted yet.
Hence, this thesis research was aimed at identifying spatio-temporal patterns in the siting of selective depositions in the Bourtanger Moor and adjacent Hondsrug from the Late Neolithic and Bronze Age and to examine how these patterns related to the physical and cultural characteristics of the landscape.
To conduct this research selective depositions from a dataset compiled by dr. Marieke Doorenbosch (postdoc at Leiden University) were plotted on national-scale palaeogeographic maps by Vos et al. (2020) and a local-scale palaeogeographic map by Casparie et al. (2008) to assess spatial relations between the selective depositions themselves and between the depositions and palaeogeographic landscape units (i.e. raised bogs, subglacially formed ridges, cover sands, and stream valleys). Different spatial data were considered to be ‘close’ to each other when they were within a 500 m range from each other. This distance was based on the ‘meso-scale’ for landscape context analyses of bog bodies proposed by Chapman et al. (2019) and the landscape-scale formulated by Rundkvist (2015).
Analysis of the patterns in the associations indicates that more selective depositions from the study area are associated with stream valleys and the Runde brook river than would be expected when a normal distribution of all selective depositions across all landscape types would be assumed.
Namely, the total area of the stream valleys on the 1500 BCE palaeogeographic map is much smaller than the total areas of the raised bog, subglacially-formed ridge and coversand landscape units, whilst the order of magnitude of the number of depositions that is associated with each unit is the same. Hence, the number of selective depositions associated with a given landscape unit is not proportional to that unit’s size, which implied that the depositions are not normally distributed across the landscape units.
Thus, it was found that selective depositions were intentionally deposited in or near (ephemeral) waterways within or close to the borders of the Bourtanger Moor from the Late Neolithic until the Late Bronze Age.
In addition, two distinct concentrations of selective depositions were identified. One in the area where a Middle Iron trackway crossed the Runde, the other at the location of a stream valley on the edge of the Hondsrug, where the same trackway entered the Bourtanger Moor just north of the Barger-Oosterveld ‘temple’ was found. Both deposition zones are argued to have been transition zones, as the stream valley and the Runde at the same time divided and connected different physical and socio-cultural domains. Moreover, the association with the same trackway (and potential older precursors), indicates that there was probably also a strong association between bog trackways and selective depositions. Not only were selective depositions found along these trackways, but the trackways also connected different deposition zones to each other. Hence, they probably had a special or ritual character for the inhabitants of the area.
The custom of selectively depositing objects near stream valleys was rooted in the preceding Middle Neolithic (Wentink 2006), continued into the Late Neolithic and Bronze Age (this thesis) and Iron Age (De Vries 2015; 2016). Deposition in or close to the Runde and other brook streams in the Bourtanger Moor had already been noted by Van der Sanden (2004), but was not identified by Wentink (2006), Fontijn (2012), or De Vries (2015; 2016). However, the maps of Iron Age selective depositions by De Vries (2016) seem to indicate that also during the Iron Age deposition took place in or close to the Runde. Deposition close to the bog trackways took place from the Late Neolithic to the Iron Age.
The identified associations between waterways and trackways and selective depositions in the study area are in line wider north-western and northern European traditions of depositing objects in or near (flowing) water. However, the association between waterways within bog and on their borders has not been investigated in other north-western and northern European bog landscapes yet, and thus deserves further attention in future research.
Finally, a new hypothesis is proposed for the preference behind the selective deposition in or near to stream valleys and brook streams in the Bourtanger Moor. It is argued that because of the relatively high morphodynamic activity of the stream valleys and brook streams (compared to e.g. raised bog domes), which induced relatively fast and frequent geomorphological change, these landscape units might have been preferred as locations for selective depositions.
To test this hypothesis, more study into the landscape siting of selective depositions in other north-western and northern European bog landscapes is needed. Such studies should ideally be carried out by applying a ‘best practice’ approach, in which a distinction is made between specific landscape units within bogs, rather than that selective depositions are merely associated with overarching categories such as ‘bog’ or ‘river’. By doing so, potential motivations behind the siting of selective depositions based on differences in temporal landscape change between landscape units can be assessed.