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Archaeology Wales Goldcroft Common Caerleon, Newport Archaeological Watching Brief By Jennifer Muller Report No. 1684 Archaeology Wales Limited The Reading Room, Town Hall, Llanidloes, SY18 6BN Tel: +44 (0) 1686 440371 Email: [email protected] Web: arch-wales.co.uk Archaeology Wales Goldcroft Common, Caerleon, Newport Archaeological Watching Brief Prepared For: Western Power Distribution Edited by: Philip Poucher Authorised by: Mark Houliston Signed: Signed: Position: Philip Poucher Position: Managing Director Date 29/05/18: Date: 04/06/18 By Jennifer Muller Report No. 1684 May 2018 Archaeology Wales Limited The Reading Room, Town Hall, Llanidloes, SY18 6BN Tel: +44 (0) 1686 440371 Email: [email protected] Web: arch-wales.co.uk Contents 1. Introduction 1 2. Methodology 3 3. Watching Brief Results 4 4. Finds 5 5. Conclusion 5 6. Bibliography 5 List of Figures Figure 1 Location map of the site Figure 2 Location map of the excavation Figure 3 Plan of excavated area List of Plates Photo 1 Driveway prior to excavation Photo 2 Trench section at northwest end Photo 3 Trench in plan at northwest end Photo 4 Trench section near northwest end Photo 5 Trench section in centre of driveway Photo 6 Trench section at southeast end of driveway Photo 7 General shot of trench within driveway Photo 8 General shot of trench in road Photo 9 Southeast facing trench section in road Photo 10 Northwest facing trench section in road Appendices Appendix I Context Register Appendix II Written Scheme of Investigation Appendix III Archive Cover Sheet Copyright Notice: Archaeology Wales Ltd. retain copyright of this report under the copyright, Designs and Patents Act, 1988, and have granted a licence to Western Power Distribution Ltd, to use and reproduce the material contained within. The Ordnance Survey has granted Archaeology Wales Ltd a Copyright Licence (No. 100055111) to reproduce map information; Copyright remains otherwise with the Ordnance Survey i Non-Technical Summary This report results from work undertaken by Archaeology Wales Ltd (AW) for Western Power Distribution Ltd on land at 30A Goldcroft Common, Caerleon, Newport, NP18 1NG, centred on ST 33826 90864. The report details the results of an archaeological watching brief that took place to ensure the preservation by record of any archaeological remains encountered during groundworks associated with service renewal work. The area of works lies within the Roman fortress of Isca and within the Caerleon Archaeologically Sensitive Area (ASA). The works therefore had the potential to encounter remains of Roman origin, and possibly later date (medieval or post-medieval). Glamorgan- Gwent Archaeological Trust – Curatorial Division had therefore recommended that an archaeological watching brief be undertaken during ground disturbing works. No finds, features or deposits of archaeological interest were encountered during the works. All deposits encountered would appear to relate to modern driveway and road surfaces, along with modern services. The watching brief complied with the Chartered Institute for Archaeologists Standards and Guidance for an Archaeological Watching Brief (2014). 1. Introduction Location and scope of work Archaeology Wales Ltd (AW) was commissioned by Western Power Distribution Ltd to undertake an archaeological watching brief during service renewal work on land at 30A Goldcroft Common, Caerleon, Newport, NP18 1NG, centred on ST 33826 90864 (Figures 1 & 2). The work comprised the excavation of a 10m-long service trench along a driveway and into the road to connect with existing services. The area of works lies within the Roman fortress of Isca and within the Caerleon Archaeologically Sensitive Area (ASA). The works therefore had the potential to encounter remains of Roman origin, and possibly later date (medieval or post-medieval). Glamorgan- Gwent Archaeological Trust – Curatorial Division (GGAT-CD) therefore recommended that an archaeological watching brief be undertaken during ground disturbing works. Prior to works commencing an approved Written Scheme of Investigation (WSI) was produced by AW in accordance with the Standard and Guidance for Archaeological Watching Briefs (CIfA 2014) and was designed to provide an approved methodology of archaeological work to be implemented during the excavations (Appendix II). The watching brief took place on 9 May 2018 under the supervision of Jennifer Muller, and the project was managed by Philip Poucher MCIfA, both of AW. The AW project number for the work is 2607, and the site code is GCC/18/WB. The project details are summarised on the Archive Cover Sheet (Appendix III). 1 Topography and Geology The site, located at ST 33826 90864, lies adjacent to No.30A Goldcroft Common with Caerleon. The work comprised the excavation of a service trench along a driveway and into the road to connect with existing services. A row of terraced and semi-detached housing line the northwest side of Goldcroft Common, fronted by a tarmac road and a triangular area of turf-covered common beyond. This is bounded by the High Street (B4236) which runs along the southeast edge of the common. The site lies within the urban centre of Caerleon, at approximately 17mOD. The historic core of the town extends to the northeast and southeast, with more modern development extending beyond the railway line to the northwest. The River Usk curls around Caerleon approximately 600m to the southeast of the site, joined by the Afon Lwyd tributary approximately 800m to the east of the site. The ground rises gradually to the northwest of the site for approximately 600-700m before rising more steadily along the valley side. The underlying geology of the area comprises interbedded argillaceous rocks and sandstone of the Maughans Formation, overlain by undifferentiated sand and gravel river terrace deposits (BGS 2018). Archaeological and Historical Background The site lies on the edge of the Roman legionary fortress established at Caerleon, or Isca, around 75AD. This is one of only three permanent legionary fortresses in Britain, and is likely linked to the campaigns of Julius Frontinus, the Roman governor of Britain, against the native Silures. The fortress was the home of the 2nd Augusta Legion, a legion of over 500 men. It was laid out in a standard playing card design, covering an area of some 50 acres, with a gated entrance in the centre of each side. The turfed area of the common a few metres to the southeast of the development site lies within boundaries of the Scheduled Ancient Monument of MM233 Caerleon Legionary Fortress: Coldcroft Common. This covers the remains of the barracks blocks located within the northern defences, and to the east of the northern gateway. The barrack blocks would have housed 80 men, with the Centurion’s residence, along with housing for junior officers and offices, located at the northern end of each barrack block. The limits of the fortress extend beyond the Scheduled Area, but subsequent development suggested these remains are likely to be truncated. The location of the gateway lies some 100m to the southwest of the site, but the site itself is likely to lie on the line of the fortress defences. The fortress was in use by the 2nd Augusta Legion until around 300AD, after which it appears to have been partially occupied, although it is unclear if this was civilian or military in nature. Following the end of Roman administrative control in the early 5th century it is possible that activity continued in Caerleon. Caerleon may have been important to the early Christian church, being the site of the martyrdom of Saint Julius and Saint Aaron in the 3rd century. Graves of 6th to 7th century date have been recorded in the town, and the site likely equates to the city of ‘Caer Lion’ listed by monk Nennius, writing in the 9th century. During the 2 medieval period a castle was built utilising in part the southern wall of the Roman fortress defences. This castle was built before 1086, when it was recorded in the Domesday Book, making it likely to be one of the earliest castles built in Wales during the Norman conquest, with a likely construction date between 1067 and 1075. The castle is described, passing between various owners, into the 13th century. It is mentioned again in the 17th century, but described as ‘utterly ruinated’. The location of the known early medieval and medieval sites within Caerleon would suggest settlement activity had moved to the southeast part of the former Roman fortress, away from the development site, but the potential remains for early medieval and medieval activity within the area around the development. The northern edge of Goldcroft Common had been developed by the time accurate maps of the area begin to appear in the mid-19th century, although the current building occupying No. 30A would appear to be early-20th century in date. 2. Methodology A watching brief complying with the Chartered Institute for Archaeologists (CIfA) Standard and Guidance for an Archaeological Watching Brief (2014) was undertaken during all intrusive ground work on the site. The watching brief was undertaken to allow the preservation by record of any archaeological deposits, the presence and nature of which could not be in advance of works. The watching brief also provides an opportunity, if needed, for the watching archaeologist to signal to all interested parties, before the destruction of the material in question, that an archaeological find has been made for which the resources allocated to the watching brief itself are not sufficient to support treatment to a satisfactory and proper standard (CIfA, 2014). The excavation comprised one trench 10m in length by 0.30m in width that extended into the road in an L-shape approximately 1.5m by 2m (Figure 3). The trench reached a maximum depth of 0.55m in the driveway, and 0.64m in the road.