Imperial timber? Dendrochronological evidence for large-scale road building along the Roman limes in the Netherlands

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During the Roman period various military structures were build along the limes in the Lower Rhine Region. These military structures were connected with a road. This road has been excavated at various locations. One construction phase of the limes road and related structures was dendrochronologically dated to the autumn or winter of AD 124–125. This phase is probably related to a visit of emperor Hadrian to the region. The dendrochronological material of all contexts from this period shows a striking similarity of the tree ring patterns. This indicates that the wood came from a single region. This region is thought to have been located on the coarse soils between Xanten and Venlo. The timber was thus transported over a distance of approximately one hundred kilometres, making this the earliest example of large-scale long distance timber transport in the Lower Rhine region. The scale of the project justifies the assumption that the Roman state and army were involved. The oaks were most likely transported over water using barges. It should be noted that local wood was also used, indicating that the local woodlands were not yet depleted, but for this large-scale project the Roman army also had to look elsewhere for resources.