Dingwall Viking Thing Project
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Dingwall Viking Thing Project Cromartie Memorial Car Park, Dingwall, Highland Report on Geophysical Survey Ground Penetrating Radar OJT SURVEYS November 2011 © OJT Surveys 2011 REPORT DETAILS SHEET National Grid Reference NH 54981 58916 Address Cromartie Memorial Car Park, Church Street, Dingwall Parish Dingwall Council Highland SMR MHG16352 NMRS NH55NW 154 Client Dingwall History Society Project Manager Dr Oliver J T O’Grady Contact Detail OJT Surveys 28B Wilson Street Perth, PH2 0EX 07821155677 [email protected] Text Dr Oliver J T O’Grady Illustrations Dr Oliver J T O’Grady Fieldwork Dr Oliver J T O’Grady David & Sandra MacDonald (assisting) Schedule Fieldwork September 2011 Report November 2011 Checked by: ………………………… 1 © OJT Surveys 2011 CONTENTS 1.0 INTRODUCTION………………………………………………………………………………….......3 2.0 LOCATION………………………………………………………………………………………...…..3 3.0 ARCHAEOLOGICAL BACKGROUND…………………………………………………………….4-5 4.0 METHODOLOGY………………………………………………………………………………...…5-6 5.0 RESULTS…………………………………………………………………………………………...6-14 6.0 INTERPRETATION…………………………………………………………………………….... 14-15 7.0 RECOMMENDATION……………………………………………………………………………16-17 8.0 BIBLIOGRAPHY……………………………………………………………………..........................17 FIGURES……..………………………………………………………………………………………..18-28 APPENDIX……………………………………………………………………………….....................29-33 2 © OJT Surveys 2011 1.0 Introduction This document presents the results of a ground penetrating radar survey undertaken by OJT Surveys at the Cromartie Memorial Car Park, Dingwall. The car park has been identified as the site of Dingwall’s Viking thing mound, which is an important type of early medieval legal assembly site. The survey was aimed at assessing the car park and the immediate environs for buried archaeological remains relating to the historic mound, its use as an assembly site and Dingwall’s historic environment more generally. The survey formed part of a wider project seeking to address key issues as to the character and origins of Dingwall’s Viking assembly site or thing . This also included a resistance survey at the neighbouring site of St Clement’s old parish church; the results are detailed in a separate report (O’Grady 2011; O’Grady & MacDonald 2011). The radar data includes the results of a timeslice survey across the car park interior and individual profiles recorded at several locations over the site and adjacent Church Street. Key findings from the survey include the identification of a possible ditch surrounding the mound; indications of a route-way connecting the church and mound; and considerable disturbance from post-medieval buildings particularly on the south side of the car park. This report presents the data alongside suggested interpretations and recommendations for further work. The author wishes to express sincere thanks to the Highland Council Members for granting exclusive access to car park for the survey. Thank you also to Ms Liz Cowie (Highland Council), David and Sandra MacDonald and family, and Jonathan McColl of Dingwall History Society. Members of the local community were also invited to take part and thanks to all those who assisted during the fieldwork for a warm welcome. Special thanks to David MacDonald for reading over a draft of this report and suggesting informative revisions to section 3.1; fault for any remaining errors rests with the author. 2.0 Location The survey was confined to the Cromartie Memorial Car Park and Church Street, which flanks the site on the west and north (Figure 1). The car park is located a short distance north of Dingwall High Street and opposite Dingwall Old Parish Church. Dingwall is in Ross-shire and part of the Dingwall and Seaforth Ward of Highland Council. At approximately 3m OD, the car park is flanked by Tulloch Street to the east and Mart Road to the south. In the wider landscape, the channelised lower reaches of the River Peffery are located a sort distance to the north and 1.5km from its confluence with the Cromarty Firth; the town of Dingwall being located at the head of the fertile and U-shaped Strathpeffer valley. 3 © OJT Surveys 2011 3.0 Archaeological Background 3.1 Description The car park has been identified as the site of Dingwall’s thing-mound on the basis of recent historical and archaeological research by the author and Dingwall residents, David and Sandra MacDonald (O’Grady 2008; O’Grady & MacDonald 2011). Prior to the mid-20 th century the area of the car park was the site of a mound, the presence of which is still visible as a slight inclination of the ground surface. This visibly rises to the base of a memorial garden located in the centre of the car park. Based on glimpses of the monument provided by early 20 th -century photographs of the location, the earthen mound was substantial and flat-topped (Figure 2 and 3). However, after 1947 the monument was mostly reduced, after being feued to the town on the proviso that the land be specifically reserved for car parking facilities. The mound is in fact visible on Ordnance Survey maps until the 1959 1:10,560 edition, and does not feature on the 1965 1:2,500 edition. In the early 18 th century, the site became the burial place of Sir George Mackenzie, first Earl of Cromartie (d.1714), and apparently also of other members of the Mackenzie family. The Earl in his lifetime erected a prominent obelisk monument on the summit and following his death he was interred in a vault inserted into the south side of the mound. A replica of the obelisk erected in 1921 occupies the centre of the car park within a small walled garden, created at the 1947 reorganisation (Figure 1; O’Grady 2008; O’Grady & MacDonald 2011). The site is within the Dingwall Conservation Area and the obelisk is a Class B Listed Building. The mound itself was historically referred to as the “Mute Hill of Dingwall”. ‘Mute’ is a Scots word meaning ‘assembly’ and is equivalent to Old Norse ϸing , in this context meaning a law court. The place-name Dingwall derives from the Old Norse words ϸing-vӧllr meaning ‘assembly field’, probably in reference to the venue for popular assemblies associated with an important early law- court. The mound was described in 1503 as the ‘montem' 'beside the town of Dingwall’, meaning a small hill. In 1672 what is presumably the same feature within the 'Hillyard' is called the Mute Hill, ‘assembly-hill’. In 1875 the mound was excavated into during attempts to confirm the burial place of the first Earl of Cromartie. Digging is recorded on the west and south sides of the memorial, but may have been more extensive, leading to discovery of a lead coffin and other wooden coffins of indeterminate date (O’Grady 2008; O’Grady & MacDonald 2011). Burgh land records of the early nineteenth century name, as the Hill Yard, the oval-shaped enclosure, shown on Wood’s plan of 1821 to contain the mound and monument and, except on the south side, the car park’s boundaries largely respect this enclosure’s outline. In 1947 the enclosure, then named 4 © OJT Surveys 2011 as the Pyramid Ground, encompassed an area 60m x 50m in size and was surrounded by a wall. Further historic details are provided by the minister of Dingwall who in 1718 refers to a “ditch or sink” which “wants a bridge” “betwixt the church and the glebe”, apparently identifying the Trinity Croft, immediately west of both kirkyard and Hill Yard as that glebe. Moreover Bishop Pocock in 1760 directly described the Cromartie burial place as “fenced with a ditch”. In 1815 the town met the expense of filling the “pit at the Pyramid”. Pocock’s description also suggests that the mound may have had a stepped or terraced slope, perhaps similar to the celebrated Tynwald Hill on Man. In a sasine of 1802 the southern boundary of the Cromartie burial place is referred to as the ‘Common Strype or Fludder in which the sea enters’ (O’Grady & MacDonald 2011; pers comm. David MacDonald). Scots Strype can have the meaning ‘a small channel’ and may be a reference to the outflow of a ditch on the south side of the mound (see http://www.dsl.ac.uk). Historic maps of the site and boundaries recorded in the burgh sasine register show that the tidal shoreline originally flanked the site to the east and that the church, mound and the Trinity Croft were located on a small promontory north of the town (O’Grady & MacDonald 2011). 3.2 Previous Archaeological investigation No modern archaeological investigations are recorded in the area of the car park. Archaeological works have taken place a short distance to the west at the Church Hall on Church Street in 2001 and at the site of a former Auction Market in advance of a supermarket development in 2003. An area 15m x 6m was evaluated west of Church Street, but no archaeological deposits were encountered below 0.5m of overburden or at the Church Hall (Cook 2003: 7). 3.3 Geology The drift geology is sand and gravels with pockets of estuarine clay over a sedimentary solid geology of Old Red Sandstone. 4.0 Methodology A single channel radar device was utilised with a 400MHz antenna and dedicated data logger supplied by Utsi Electronics Ltd. Data was recorded using 60-80ns Tsweep settings and readings were taken every 14.75mm. For the timesclice survey parallel runs were recorded 0.5m apart. Single profiles were recorded at several trajectories to allow cross referencing of anomalies and maximise the efficiency of archaeological prospection. Survey tapes were used to measure the location of each surveyed profile and the data was subsequently located on an OS Mastermap plan using a 5 © OJT Surveys 2011 combination of off-set measurements from known points and GPS readings. Processing was undertaken using Reflex and involved standard background removal, application of gain function and bandpass butterworth smoothing.