Collaboratory through Crises: Researching Linear Monuments in 2021

This article introduces the third volume of the Offa’s Dyke Journal (ODJ). As well as reviewing ODJ 3’s contents, I present reviews of the journal received to date, notable new publications on linear monuments, and the Collaboratory’s key activities during 2021. The context and significance of the research network’s ongoing endeavours are presented set against intersecting academic and public crises affecting the study and public’s engagement with past frontiers and borderlands.

Rethinking Wat’s Dyke: A Monument’s Flow in a Hydraulic Frontier Zone

Britain’s second-longest early medieval monument – Wat’s Dyke – was a component of an early medieval hydraulic frontier zone rather than primarily serving as a symbol of power, a fixed territorial border or a military stop-line. Wat’s Dyke was not only created to monitor and control mobility over land, but specifically did so through its careful and strategic placement by linking, blocking and overlooking a range of watercourses and wetlands. By creating simplified comparative topographical maps of the key fluvial intersections and interactions of Wat’s Dyke for the first time, this article shows how the monument should not be understood as a discrete human-made entity, but as part of a landscape of flow over land and water, manipulating and managing anthropogenic and natural elements. Understanding Wat’s Dyke as part of a hydraulic frontier zone not only enhances appreciation of its integrated military, territorial, socio-economic and ideological functionality and significance, most likely the construction of the middle Anglo-Saxon kingdom of Mercia, it also theorises Wat’s Dyke as built to constitute and maintain control both across and along its line, and operating on multiple scales. Wat’s Dyke was built to manage localised, middle-range as well as long-distance mobilities via land and water through western Britain and beyond.

What's Wat's Dyke? Wrexham Comic Heritage Trail

We hope this comic heritage trail for Wrexham helps introduce you to Britain's third-longest ancient monument.Wat's Dyke was built in the early medieval period (most likely between the late 7th and early 9th centuries AD). Today, it is a fragmentary bank and ditch surviving in varied states of preservation. When newly built, it was most likely designed as a continuous construction by the Anglo-Saxon kingdom of Mercia to dominate and control its western frontier with Welsh rivals. It runs over c. 64km from Basingwerk (Flintshire) to Maesbury (Shropshire).The map shows you where you can visit the monument today, and the comic panels tell the story of Wat's Dyke at each location. And if you'd like to know even more about Wat's dyke and other similar monuments, there are suggestions for further reading as well as online links to recent research at the end of the booklet.

Drawing the Line: What’s Wat’s Dyke? Practice and Process

Often neglected and misunderstood, there are considerable challenges to digital and real-world public engagement with Britain’s third-longest linear monument, Wat’s Dyke (Williams 2020a). To foster public education and understanding regarding of Wat’s Dyke’s relationship to the broader story of Anglo-Welsh borderlands, but also to encourage the monument’s management and conservation, we proposed the creation of a comic heritage trail (Swogger and Williams 2020). Funded by the University of Chester and the Offa’s Dyke Association, we selected one prominent stretch where Wat’s Dyke is mainly damaged and fragmentary and yet also there remain well-preserved and monumental sections. Around Wrexham, Wat’s Dyke navigates varied topographies including following and crossing river valleys, and it is accessible to the public in the vicinity of North Wales’s largest town. In this article we outline the dialogue and decision-making process behind the map and 10-panel comic: What’s Wat’s Dyke? Wrexham Comic Heritage Trail (Swogger and Williams 2021; Williams and Swogger 2021a–b). In particular, we consider the stages taken to adapt from the initial plan of producing a bilingual map guide in response to the circumstances surrounding the COVID-19 pandemic lockdowns. This digital resource, published online in Welsh and English, guides visitors and locals alike along a central stretch of Wat’s Dyke around Wrexham town from Bryn Alyn hillfort to the north to Middle Sontley to the south. The comic heritage trail thus responds to the highly fragmented nature of the monument and utilises the linearity of Wat’s Dyke as a gateway to explore the complex Anglo-Welsh borderlands from prehistory to the present day. Building on earlier discussions (Swogger 2019), What’s Wat’s Dyke? illustrates the potential of future projects which use comics to explore linear monuments and linear heritage features (from ancient trackways and roads to railways and canals) constructed across the world from prehistory to recent times.

Exploring Linear Earthworks across Time and Space – Introducing the ‘Monumentality and Landscape: Linear Earthworks in Britain’ Project

Linear earthworks of a monumental character are an enigmatic part of the British landscape. Research in Britain suggests that such features range in date from the early 1st millennium BC to the Early Middle Ages. While the roles of these monuments in past societies cannot be understated, they remain a relatively under-researched phenomenon. This article introduces the Leverhulme Trust-funded ‘Monumentality and Landscape: Linear Earthworks in Britain’ project, which aims to provide a comparative study of linear earthworks focusing on those dating to the Iron Age and early medieval period. This contribution reviews our approach and shares preliminary results from the project’s first year, identifying wider implications for the study of linear earthworks.

Utilising Lidar Survey to Locate and Evaluate Offa’s Dyke

The enigmatic and gigantic Offa’s Dyke has long been understood as a demonstration of the power of the Mercian state in the long eighth century. Despite this, rarely have previous studies involved anything more than the visual observations of the earthwork. Moreover, ground-level perspectives cannot possibly contextualise its total breadth and character. The shortcomings in the resulting quality of data on the Dyke has led to uncertainties and debate over its route, extent, and placement in the landscape. With the application of lidar and other digital technologies, my ongoing doctoral research is providing a fresh understanding of the nature and original extent of Offa’s Dyke’s route by the creation of an accurate and empirical dataset. This digital dataset for Offa’s Dyke is identifying hitherto unknown sections of the monument. Furthermore, it is providing the foundation for new investigations of the nature of the frontier in the eighth century by creating the basis for new investigations into the placement and landscape context of the monument. This article presents interim results on the investigation of the Herefordshire section of Offa’s Dyke, a stretch that has been among the most problematic and poorly understood from all sections of the earthwork. This study thus provides fresh perspectives utilising digital heritage tools and data sources to examine and re-evaluate evidence of the nature and extent of the monument and the wider Mercian frontier.

Patrons, Landscape, and Potlatch: Early Medieval Linear Earthworks in Britain and Bulgaria

Often seen as exceptional monuments, comparative analyses of linear earthworks are rare. Exploring Offa’s Dyke (Wales and England) and the Erkesiya (Bulgaria) as comparable expressions of authority in the early medieval landscape. This article is a revised and updated republication of an early study (Squatriti 2001), arguing that both linear monuments represent strategies to not only reflect, but actively create, royal power.

Offa’s Dyke in the Landscape: Comparative Size and Topographical Disposition as Indicators of Function

Despite the large volume of published work on Offa’s Dyke there is no settled conclusion as to its original purpose. Many different and often conflicting theories exist, most of which can be put into three broad categories: defensive, political and economic. It is generally accepted that the monument’s disposition relative to the adjacent topography is significant for interpretations of purpose. In this article, field survey and GIS mapping techniques are applied with respect to the comparative size and topographical disposition of a stretch of central Offa’s Dyke in order to examine its utility as a defensive structure. This allows a re-evaluation of claims by Hill and Worthington (2003), among others, that the route of Offa’s Dyke was designed to optimise outlook by following the west facing brow of hills, or more generally to ‘command’ the western landscape. Evidence reported here shows that central Offa’s Dyke does not consistently prioritise western views. Instead, it was positioned in such a way as to often obscure westerly vistas, despite the opportunity to optimise such an outlook by relatively minor route adjustments. On the basis of the evidence reported, discussed in the context of the wider literature, it is concluded that central Offa’s Dyke should be interpreted as a physical obstacle rather than a defensive fortification. After a brief consideration of alternative theories of purpose it is suggested that Offa’s Dyke was most likely built with economic and political, rather than defensive, functions in mind. It is postulated that control of trade provides a plausible context for its construction.

Offa’s Dyke: A Continuing Journey of Discovery

New observations concerning the Mercian/Welsh frontier, principally on Offa’s Dyke (but also on Wat’s Dyke and in the Vale of Clwyd), were made each winter between 2016/17 and 2019/20 by the lead author with, at one time or another, each of the collaborators in this article. The prime focus here is upon Offa’s Dyke in west Gloucestershire and in Flintshire, in both of which areas fieldwork is adding incrementally to our stock of knowledge about the extent and nature of the monument. However, observations elsewhere on its course, such as in west-central Herefordshire, at Hem (Montgomeryshire), and near Trefonen (Shropshire) are also noted in brief descriptive sections. The identification of ‘new’ lengths of Offa’s Dyke in Tutshill (near Chepstow) and between Lower Redbrook and Lower Lydbrook south-east of Monmouth indicates that the linear earthwork was built as a near-continuous or continuous monument in these southerly areas. Meanwhile, the discovery of lengths of linear earthwork in Flintshire that could have formed part of a continuous course reaching the sea near Gronant east of Prestatyn has also raised important questions about the relationship of Wat’s Dyke to Offa’s Dyke.

Collaboratory, Coronavirus and the Colonial Countryside

Introducing the second volume of the Offa’s Dyke Journal (ODJ), this five-part article sets the scene by reviewing: (i) key recent research augmenting last year’s Introduction (Williams and Delaney 2019); (ii) the key activities of the Offa’s Dyke Collaboratory in 2020; (iii) the political mobilisation of Offa’s Dyke in the context of the COVID-19 pandemic lockdowns; (iv) the ramifications of accelerated efforts to decolonise the British countryside on both archaeological research and heritage interpretation on linear monuments; and (v) a review of the contents of volume 2. Together, this introduction presents the context and significance of ODJ volume 2 for both research on the Welsh Marches and broader investigations of frontiers and borderlands.