2018 Funding Success with the Society of Antiquaries of London

The Bamburgh Research Project are pleased to announce that the Society of Antiquaries of London have kindly awarded us £4700 to undertake continuing post-excavation analysis of the material recovered within the West Ward of Bamburgh Castle.

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The project ‘Forging Castle Space’, will focus on the metalwork recovered from early medieval contexts in Trench 3. The funding will allow us to assess and plan the conservation of 7,200 fragments of early medieval metalwork, spanning the 8th-11th centuries, plus conserve a 25% sample of all styca coins recovered.

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The Bamburgh Bird. One of the many early medieval artefacts recovered from Trench 3.

Upon completion of the project the metalwork will be better understood in terms of its function, origin and date, plus its purpose for deposition within an associated building, likely used for working metal (You can read more about the building here: Castling, J. and Young, G. L. 2011. A 9th Century Industrial Area at Bamburgh Castle, Medieval Archaeology, Vol. 55, 311-317). This data will allow us to better understand the function of the building, its associated area and the broader 8th-11th century horizon in this area of the castle. The data generated will also inform ongoing excavation and aid us in our attempt to contextualise earlier excavations (1959–74) for which we only have a partial archive surviving.

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9th-10th century ‘metalworking’ building

The long-term goal is to establish the character and significance of early medieval activity, as this was pivotal in creating the spatial and material precedent upon which the post-Conquest castle complex developed.

We have already made great strides towards understanding this period in the West Ward, as we have recently completed the post-excavation analysis of Trench 8, which sits immediately adjacent to Trench 3. Funding from the Royal Archaeological Institute has enabled us to determine a stratigraphic sequence from the modern to the Roman period using the artefacts recovered and C14 dates to identify and date contexts. You can learn more about this project here: Trench 8 RAI Grant.

If you would like to join us this season to help us undertake the excavation of this fascinating site or work more specifically with our post-ex team (artefacts and environmental material) please visit our website for more information: http://www.bamburghresearchproject.co.uk

 

 

 

The archaeology Field School is filling up

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We are very happy to say that although booking has only been open for a few weeks, we are already more than 50% booked. There is still plenty of space left but some weeks are beginning to look quite full, so if you are thinking of joining us this summer then do drop us a line soon if you are not flexible in the weeks that you can join us.

This summer the excavation runs from June 17th – July 20th.  We will be excavating in the West Ward of Bamburgh Castle on early medieval layers and we are offering two programmes:

Excavation and Post-Excavation and

Post-Excavation only

book anywhere from one to five weeks. However, we recommend booking two weeks minimum for a well rounded experience. Our dates are listed below:

  • Week 1: June 17th- June 23rd
  • Week 2: June 24th- June 30th
  • Week 3: July 1st- July 7th (waiting list only)
  • Week 4: July 8th- July 14th (waiting list only)
  • Week 5: July 15th- July 20th (waiting list only)

Tuition is £275 per week, which will cover all on-site excavation and post-excavation activities. You can learn more about what this covers by visiting our website.

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Accommodation must be booked separately. There are many options for accommodation in the area to suit every budget and we are happy to offer suggestions. However, we do encourage all participants to stay in close proximity to BRP staff, as this allows staff and students the opportunity to get to know one another in a social setting and there are friendly faces around should you need a helping hand. This year our staff will be staying at Budle Bay Campsite

Note: There have been several changes to the field school such as our training schedule and when you are expected to arrive. Even if you have booked in years past we encourage you to read-through the updated website pages.

If you have any questions please do not hesitate to get in touch.

Launch of our 2018 Archaeology Field School

 

Booking details are now available for our 2018 field school season, which runs from June 17th – July 20th.  The field school will operate out of Bamburgh Castle and we are offering two programmes:

Excavation and Post-Excavation or Post-Excavation only

You can book anywhere from one to five weeks. However, we recommend booking two weeks minimum for a well rounded experience. Our dates are listed below:

  • Week 1: June 17th- June 23rd
  • Week 2: June 24th- June 30th
  • Week 3: July 1st- July 7th
  • Week 4: July 8th- July 14th
  • Week 5: July 15th- July 20th

Student spaces are limited, so we encourage you to book your place as soon as possible.

Tuition is £275 per week, which will cover all on-site excavation and post-excavation activities. You can learn more about what this covers by visiting our website.

Accommodation must be booked separately. There are many options for accommodation in the area to suit every budget and we are happy to offer suggestions. However, we do encourage all participants to stay in close proximity to BRP staff, as this allows staff and students the opportunity to get to know one another in a social setting and there are friendly faces around should you need a helping hand. This year our staff will be staying at Budle Bay Campsite

Note: There have been several changes to the field school such as our training schedule and when you are expected to arrive. Even if you have booked in years past we encourage you to read-through the updated website pages.

If you have any questions please do not hesitate to get in touch.

Medieval and Anglo-Saxon Metalworking at Bamburgh Castle: the results of the Trench 8 assessment and conservation

As part of the BRP’s ongoing post-excavation analysis of Trench 8 in the West Ward of the Castle (click here for a full description of the research project funded by the Royal Archaeological Institute) a collection of 165 metal objects were sent for x-ray and assessment. Of these, the copper alloy and lead objects were found to be in good condition but the iron objects were poorly preserved with significant surface loss on some.

Of the metal artefacts recovered, 19 were recommended for conservation. Funding was provided by Bamburgh Castle to undertake the conservation where the artefacts were appropriately cleaned and stabilised. These have now been returned to the Castle in the hope that some will go on long-term display within the Castle’s archaeology museum and the rest will be carefully stored for future research.

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Trench 8 under excavation in 2008

The 165 objects ranged in date from 7th century – 1970’s. The majority of the collection is made up of medieval iron nails (85) with various other objects, including horseshoes, a key, bolts and a buckle also dating to this period.

The Early Medieval period is also well represented within this collection. This is not unexpected as Trench 8 lies in close proximity to the 9th-10th century metalworking building located in Trench 3, where a large styca hoard and other examples of Anglo-Saxon metalwork have been discovered (for more info see Castling, J. and Young, G. 2011, A 9th Century Industrial Area at Bamburgh Castle, Northumberland, Medieval Archaeology, Medieval Britain and Ireland, Vol. 55, 311-317). Earlier excavations undertaken by Dr Brian Hope-Taylor (see link above) also recovered the famous Bamburgh Sword (click here to watch a lecture about the Bamburgh sword) and axe head in this area. The Anglo-Saxon material recovered from Trench 8 included a possible clench-bolt, which are often associated with boat building, wagon and building construction, a pair of shears indicative of sewing or personal grooming, a copper alloy strap end with parallels from the Anglo-Saxon port of Hamwic and three copper alloy styca coins.

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Shears before and after conservation

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Early Medieval copper alloy strap end

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Styca coin

There are 23 fragments of lead off cuts, which suggests lead was being worked in the vicinity.

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Selection of lead off cuts recovered from Trench 8

Notably, evidence of Brian Hope-Taylors earlier excavations undertaken in the 1960’s and early 1970’s is seen in the metalwork with a 1974 penny – the last year of the earlier excavations, aluminium foil and modern nails all being recovered by the 2006 BRP excavation team.

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1974 penny recovered during the 2006 dig season

The team also found in-situ finds tags from Hope-Taylor’s excavation, which have helped us understand some of the surviving paperwork and find spots of key small finds from his excavation.

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One of Hope-Taylor’s small find tags

There are numerous other objects that will require further research to date and identify parallels. These include a iron blade, hooked tag and socketed arrowhead, plus a probable copper alloy weight for a fishing net.

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Iron blade with tang before and after conservation

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Socketed arrowhead

There is still further research to be undertaken on the metalwork assemblage from Trench 8 but the initial results suggest the site was particularly active from the 8/9th century through to the 14th century. The information will be combined with that provided from the other material assemblages, such as the pottery, glass and lithic, to build a picture of life in the West Ward. This in turn will be used to support the data gathered from the larger BRP Trench 1 and Trench 3 excavations, and contextualise the unpublished and partial record from the Hope-Taylor excavations – one of the BRP’s primary research objectives within the Castle.

Future blog posts will look at some of the other material assemblages and report on the radiocarbon dates that will help provide clues toward the dating of various complex features observed in Trench 8.

Excavation Season 2018

We are running a little later than usual in announcing details about our summer excavation, but plans are in hand and we aim to make some more detailed announcements this month.

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Trench 3 with the new strucctural surface exposed in the narrow trench. Looking forward to seeing more of this in 2018!

Excavation at Bamburgh Castle will be five weeks this summer, as it was last year. Given that excavation within Trench 1 was completed last season, this year we will only be excavating in Trench 3. Our aim will be to expose an 8th century structural surface within the trench, but we are also seeking to move our post-excavation forward as well. It will be slightly smaller team than usual so probably best to book early, if you are able, once the website is updated. In the mean time if you want to be added to an email list to be contacted as soon as the details are finalised then do get in touch graemeyoung@bamburghresearchproject.co.uk

Geoarchaeology at the Bradford Kaims

Becky Scott – Assistant Supervisor (Geoarcheology) and PhD Candidate, University of Reading

Following on from our blog post about the geophysical survey carried out at the Kaims this year, we have been busy ‘ground-truthing’ the anomalies seen just to the North of Trench 6 – that is, identifying whether the magnetic anomalies seen on the survey are archaeological features or not. Of course, like most endeavors, we have had varying degrees of success! The first few test pits that were dug contained nothing but colluvium (sediment that has been deposited downslope, often known as hill or slope wash) even after digging up to a metre. We then decided to take some cores around the area that showed the magnetic anomalies to the North of Trench 6 using the Dutch auger, which is essentially a long pole about 1 metre long with a T-handle and a screw-like head at the bottom which collects and retains sediment. Dutch augers are particularly useful for hard and wet sediments so worked very well through our silty clay colluvium. After taking a number of cores (with the excellent help of our two Young Archaeologists Club competition winners!) we eventually came up with some lovely layers of charcoal and burnt material, so we set to work digging three more test pits. Two of these test pits were more much more successful, particularly Test Pit 75 which showed a charcoal layer almost 30cm thick (see Figure 1 below).

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Figure 1. SE-facing section of TP75 showing three very distinct layers: Top soil, colluvium and a ~30 cm thick charcoal and stone rich layer.

 Test Pits in the wider landscape

As well as ground-truthing the results of the geophysical survey, we have also been collecting samples for geoarchaeological analysis from some larger test pits dug by our new friend, The Big Digger. For those unfamiliar, geoarchaeology is an approach to archaeology which utilises techniques from the earth and environmental sciences to answer archaeological questions. In real life it mostly involves getting really, really muddy and pondering sediment sequences for long periods of time…

The main aim was to take samples from the colluvium in the wider landscape (identified during coring by Dr. Richard Tipping and Coring Supervisor Anna) for radiocarbon and pOSL (portable Optically Stimulated Luminescence) dating and micromorphology (the study of in-situ soils and sediments in thin section) to provide us with a proxy for human activity in the immediate area (see Figure 2 below). Colluvium results from human activity, particularly agriculture, and therefore can tell us about past agricultural processes in the wider landscape as it represents a period of soil erosion due to ploughing, over-grazing, and the removal of trees. Under gravity these sediments are then transported downslope. Sometimes, if geoarchaeologists are lucky, ancient soils will be preserved underneath the colluvium allowing us to infer a period of stability and identify the environmental conditions before the land was cleared. The nature of the colluviation also gives information about what processes caused it to erode, and how high the energy of its erosion was.

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Figure 2. Students Oda and Daniel taking OSL samples in the extended section of T6 with Anna and Becky, and Director Paul also working hard in the background. Samples for pOSL were taken vertically down the sequence from the section by inserting tubes into the face of the section, removing gently and quickly securing with tape to ensure no light entered the samples. They were then labelled with a sample number and an arrow indicating the end that had not been exposed to light, ready for laboratory analysis.

Figure 2. Students Oda and Daniel taking OSL samples in the extended section of T6 with Anna and Becky, and Director Paul also working hard in the background. Samples for pOSL were taken vertically down the sequence from the section by inserting tubes into the face of the section, removing gently and quickly securing with tape to ensure no light entered the samples. They were then labelled with a sample number and an arrow indicating the end that had not been exposed to light, ready for laboratory analysis.

pOSL will hopefully allow us to identify the rates of erosion in the area, with the radiocarbon dates from the peat below effectively acting as an ‘anchor’ to identify when this erosion (and therefore agricultural clearance) began. Once the thin sections are made, micromorphology will allow us to identify the depositional and post-depositional processes occurring at the microscale.

Geomorphological Survey at the Bradford Kaims

 Anna Finneran, Coring Supervisor and PhD Candidate, University of Durham

In 2017 the Kaims coring team has benefitted from many dry days, and persevered through some soaking days. Here’s a quick update on the accomplishments of Dr. Richard Tipping and field school students this season:

The Bradford Kaims branch of the BRP since 2010 has conducted a landscape-scale interdisciplinary investigation of a large fenland associated with our archaeological sites.  Excavations have uncovered multiple burnt mounds, structural remains, and artefacts.  Human activity spans at least the Mesolithic through the Bronze Age.  The features and material culture represent an industrial area.  Conspicuous in its absence, however, is evidence for domestic activity in the landscape. In contrast, palaeoenvironmental reconstructions present a rich aquatic environment, characterised by two large lakes throughout the Holocene and populated with unique flora and fauna, potentially attractive for long-term habitation.  The landscape surveys this season have sought to look beyond the Neolithic and Bronze Age by incorporating geomorphology, geophysics, soil micromorphology, and excavation to describe both the natural landscape and the human activity throughout the Holocene.

The main aim of the 2017 season in terms of this geomorphological mapping was coring and sediment description at locations known to contain or likely to contain layers of colluvial accumulation (or slopewash). Colluvial accumulation would result from episodes of erosion on slopes descending towards the fenland basin. Geomorphological analyses from previous seasons concluded that no natural sediment erosion occurred on steep slopes around the fenland. Any erosion on gentler slopes may then be ascribed to archaeological, and potentially agricultural, activity.

The coring team conducted coring transects across the landscape, inserting a metal tube (or sediment core) into the soils and sediments of the fenland and its surrounds, to chart the different types and depths of material.  We successfully identified layers of colluvium within layers of peat, representing episodes of agricultural destabilisation of the slopes, at numerous points. Following reconnaissance, five locations were selected for a combination of analyses including soil micromorphology and pOSL analysis (see Becky Scott’s blog in a few days for more detail on this!).

Another aim of the geomorphological investigations in 2017 was working in tandem with Graeme Attwood’s magnetometry survey to define buried anomalies. Coring and sediment description preceded excavation of 1 x 1m test pits over the most promising anomalies. The anomalies to the NW of Trench 6 proved to be burnt mounds, as hoped. However, the anomalies in the form of two parallel lines between Trenches 11 and 9 were found to be ditches for Victorian age drainage pipes.

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Despite our pipe-related set-backs, one lost (but later retrieved) core, and numerous small injuries and sprains, the coring team successfully completed our aims for this season with positive and encouraging results for the future. Next season we hope to continue to investigate the natural landscape and the human impact upon the environment throughout the Holocene, and hopefully use the analyses of colluvial deposits and the dating material provided by the fenland to gain a more in-depth understanding of how people across the Bronze Age and Iron Age influenced their landscape.

Archaeomagnetic Studies at the Bradford Kaims

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Sam Harris, Doctoral Research Student – University of Bradford

Firstly, it is purely coincidental that I study in Bradford (West Yorkshire) and am coming to take samples at the Bradford Kaims. As an archaeomagnetist, and we are pretty few and far between, it is always amazing the variety of sites that you get to see and work on. Having parachuted into the Bradford Kaims trenches for the second time, this site is no exception in its wonder. Placed at the edge of a fen, the variety of soil and sediment types on site is impressive! This offers the perfect opportunity for archaeomagnetic studies.

For those that aren’t quite sure what this odd science (magic) is, you are welcome to peruse my website, which is listed at the end of this blog post, for some answers. Simply put, the Earth has a magnetic field which varies over space and time. A record of the past geomagnetic field can be found in the in situ remains of hearths, furnaces, or other anthropogenically fired features that we as archaeologist excavate on a regular basis. Archaeomagnetic studies seek to improve our knowledge of past geomagnetic field changes through the analysis of this material. Why though, I hear you ask…

This is because we can use the knowledge of geomagnetic fluctuations over time to conduct archaeomagnetic dating and gain an idea of the last time that some fired archaeological features were heated. Having a dating method which directly relates to an anthropogenic activity, rather than to the end of an organism’s carbon absorption for example, is a powerful tool for the archaeologist.

Archaeomagnetic dating was first attempted at the Bradford Kaims in 2011. While the study was successful and the date recovered for a fired hearth feature in Trench 6 (c.4350 cal.BC) was considered accurate given other artefactual dating evidence for the site, newly acquired radiocarbon dating evidence suggests that the calibration methods used for the archaeomagnetic dates produced erroneous results. This was due to the use of an experimental and alternative calibration model from outside the UK, as the current UK calibration model does not stretch back into the Bronze Age or before. This previous study, and others since, have identified the need for further work to be undertaken. This is where me and my PhD come in! My main aim is to improve our understanding of geomagnetic field change during prehistoric periods, but particularly the Neolithic.

At the Bradford Kaims this season, I sampled two features associated with the Bronze Age burnt mounds, both of them interpreted as fire pits containing fired stones, burnt sediments, ash, and charcoal. These features will provide good radiocarbon dating records, alongside the archaeomagnetic signatures for the fired subsoils within and below them.

Thanks to the Bamburgh Research Project’s excellent radiocarbon dating programme at the Bradford Kaims, the fired archaeological features that I can archaeomagnetically study will have independent dates associated with them. By building up a number of well-dated features in this way, a new calibration curve for the UK can be created, with the Bradford Kaims being a central case study in this process. Through the combined use of radiocarbon dating and archaeomagnetic dating on prehistoric sites like the Bradford Kaims, we can gain a more nuanced understanding of their chronologies.

Sam’s website can be viewed at; www.neolithicarchaeomagnetism.weebly.com

Sam’s Twitter can be viewed at; @Archaeomagnetic

More Bronze Age Pottery!

In a previous blog post, we shared our exciting pottery find from Trench 6 at the Kaims site: a single rim fragment of cord-impressed pottery with a tentative Bronze Age date.  In our 4th week of the season, a further 21 fragments turned up in the same area!  The find included two more rim pieces, four with cord impressions, and 17 undecorated fragments of various sizes from (we believe) the lower portion of the vessel.

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Pottery fragments lying in situ in Trench 6 before excavation

After giving the collection a gentle wash, we were surprised to see that on the surface of several of the fragments are what appear to be small finger nail impressions running in horizontal lines in the fired clay.  They don’t appear to be intentional decoration, so they could be marks left by the vessel’s Bronze-Age creator during the forming process.  If after further analysis our suspicions are confirmed, this would be very exciting for us, because this find will be a rare glimpse of an individual person’s fingerprint on this landscape.

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Pottery fragments after washing

When the new pottery was compared with the original fragment, we found that the three rim pieces fit together, along with the remaining two decorated pieces.  This gives us a much more reliable idea of the possible size of the vessel, which might have had a rim as wide as 45cm.  Right now we think we might have the remnants of a very large bowl or jar.

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The 5 decorated pieces that fit together

One fragment revealed another feature of this vessel: a thin, raised band of clay running along the middle of the vessel, right at the bottom of the criss-cross, cord-impressed band of decoration near the rim.

Due to the poor quality of the clay and low firing temperatures, the vessel would not have successfully held liquid, but could have been used for food storage.

Geophysical Survey at the Bradford Kaims Uncovers a Possible Prehistoric Settlement

On the 17th and 18th of June, Graeme Attwood*, from Magnitude Surveys came to the Bradford Kaims to conduct a geophysical survey of the landscape surrounding the site. The survey produced some intriguing results which provided exciting information for future excavations of the wider archaeological landscape.

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Graeme Atwood from Magnitude Surveys performing a geophyiscal survey at the Bradford Kaims using a fluxgate gradiometer.

The geophysical survey conducted at the Kaims used a hand-pulled fluxgate gradiometer, a type of magnetometer, which measures magnetism. Magnetic survey is used in archaeology as it can detect magnetic anomalies in the ground, which may indicate the presence of subsurface archaeological features. The magnetic geophysical survey investigated a total area of approximately 2.3 hectares in order to assess the below ground archaeological potential of the Bradford Kaims, conducted as part of our wider investigation of the landscape. Our investigations integrate excavation, field walking, survey and paleoenvironmental coring to evaluate the extent and nature of human exploitation of this wetland environment.

The magnetometer survey was conducted in five areas across the landscape of the Bradford Kaims, both in the wetland areas that are the focus of our current excavations and of the hills surrounding them. The survey produced a number of magnetic anomalies, suggesting that a wide variety of archaeological features are sitting below the surface.

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Map showing the five areas in which geophysical survey was conducted at the Bradford Kaims

The fifth area investigated in the survey covered our excavations on the South-Side of the wetland. The results indicated an archaeological feature which is thought to be another large burnt mound, one of the features found across this site. We are confident of this interpretation as a small portion of the mound has been excavated in previously seasons. Part of our remit is to test the accuracy and scope of the geophysics by excavating the anomalies. This is working extremely well, giving huge scope for future work.

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Results from the fifth area of survey showing magnetic anomaly 5a which has been interpreted as a burnt mound

The most exciting results, however come from the investigations of the wider landscape. The third area of magnetometry survey on Hoppenwood Bank near our area of excavation revealed positive magnetic anomalies with a strong archaeological character. Two large circular features; one measuring 13m in diameter, the other 14.5m in diameter, were identified. These circular features are similar to the magnetic anomalies produced by round houses. This suggests we may have identified a prehistoric, possibly Iron-Age settlement, at the Kaims! Within the large outer ring of what we think may be round houses, a series of smaller sub-circular anomalies were also identified. These features are between 0.75m and 2m in diameter, possibly produced by pits and post-holes which may indicate an internal structure to the large circular features which strengthens are interpretation that these may be roundhouses. The evidence that we may have discovered a settlement becomes more convincing when we consider the series of positive anomalies that have been found across the south-eastern portion of the third area. These anomalies are thought to be produced by the presence of pits and similar cut features, suggesting human activity in this area, strengthening the argument for the presence of a settlement. Settlement activity of this type is very rare in Northumberland and very exciting.

Results from the third area of survey showing the circular magnetic anomalies; 3a and 3b that have been interpreted as possible Iron-Age round houses.

This enthralling discovery has put all of the Kaims team in high spirits and we are planning to excavate the area of the settlement, next season. The geophysical anomalies identified in this survey have opened up the possibility of an exciting future for excavation of the Bradford Kaims!

*Afterword from Paul Gething: Graeme Attwood was a regular at the BRP for almost a decade. He came as a young student, became a staff member and eventually went on to run T1 in the Castle. He left the BRP to do postgrad work in Geophysics. He has returned often to visit and occasionally to do small scale work in Bamburgh and at the Kaims. He recently started his own geophysics company in Bradford, which is thriving. He went far above and beyond what we reasonably expected of him on a furiously hot few days. I have always admired his work ethic, but he surprised me with just how much he can do. It was a great pleasure to welcome Graeme back to the BRP and fantastic to work with him again and I look forward to working with him again in the future. I also look forward to seeing his business go from strength to strength.