The Dig Diaries - School Green Training Dig, York, July 2025


Earlier this year I signed up for another training dig with York Archaeology.  This dig was once again in the Walmgate area, based on what had been dubbed 'School Green' owing to it covering part of the remains of the Hope Street School which operated in York between 1827 and 1890.  Historic maps also showed that the demolished church of St Peter-le-Willows may have occupied part of the site.  The area had been dug the previous year, and the decision had been taken to reopen the trench this year and continue to explore the medieval and possible Roman layers underneath.

DAY 1 – The Disappearing/Reappearing Feature

It was the fourth week of digging on this site for York Archaeology, and with the long period of bright sunshine and high temperatures it sounded like the previous three weeks had been heavy going.   They had however had a number of really interesting finds, including a medieval hearth.  Over the preceding weekend here had been two days of near constantly heavy rain, which had let up by the time we arrived on the site to start the week. 

This medieval tile hearth had been uncovered in the preceding weeks

The weather was unusually kind and the conditions were digging were particularly good.  The site had already yielded a number of interesting small finds and today was no different.  Working to bring the site down to the same level there was one area which raised a number of questions due to an apparent change in the soil – however the light conditions made if difficult to see, with it seeming to appear and disappear as the cloud cover changed.  My own sector produced already some sections of medieval tile, and some of the distinctive green glazed pottery from the mid-Medieval period often associated with York.  The other side of the trench also began producing Roman era finds including some fragments of the distinctive Samian pottery with its characteristic smoothness.  Even though pottery isn’t particularly my area of interest I always find the colour variation and the decorations applied to glazeware to be fascinating. 

The feature of the title was a change in the soil in the middle of the trench - near the hearth shown above - which appeared, due to the regular changes in the angle of the light and cloud cover - to appear and then disappear.  It was subsequently revealed to be a later period pit that had cut through the layers beneath then been backfilled at a later date - the contents however differed little from those of the rest of the trench - animal bone and pottery - and gave no clues as to its purpose.

DAY 2 – Unexpected Weather

Unfortunately a sudden flare up of my fibromyalgia overnight kept me off site for much of the  morning.  On my return it seemed the disappearing feature had been located – it appeared to be a pit which had been dug and backfilled at a later date than the area around the medieval  hearth that had been uncovered in previous weeks.  The exact reason for the pit was uncertain.  I was tasked with extending work bringing down one side of the trench – hunting for a layer of distinctive orange clay.  It was notable, compared to the other site in the area, how much sand there was in the upper layers of the soil – more silt than clay.  The orange layer appeared to undulate across the trench, making finding an exact level somewhat tricky.  In terms of finds we continued to find large amounts of animal bone, along with more green glazed pottery, and yet more tile.  The afternoon was subject to a sudden change of plan by an unexpected downpour – which occurred right as various weather apps had been predicting an improvement in the weather which had been overcast all day. 

A group of people in orange vests

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Sheltering from a sudden downpour

After a dash to the gazebo, we watched as the pits began to fill with water, and the one dry sandy loose began to turn into a light brown sludge.  The decision was taken to move  back to our covered area and under a nearby tree to begin processing finds.   Metal finds were separated for dry brushing, while pottery and bone were cleaned in the usual way.

 

DAY 3 – Dog’s Tooth

A white board with writing on it

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The weather continued to be less than predictable

The weather forecast for Day 3 was looking positive, but with the sudden downpour the day before any prediction seemed somewhat questionable.  The weather had however led to a continuation of the favourable digging conditions we had had on Day 1.  The first task was to clear the build-up of silty sludge from the pits and deeper parts of the trenches, where it had accumulated after yesterday’s rain.  The mud – particular with the inclusions of clay – made sifting the spoil impractical – as the first grids rapidly became clogged.  This lead to breaking up and screening the first few buckets of spoil by hand to ensure we captured any small finds which might have slipped through.  Once the silt was removed we continued cleaning back to the orange clay beneath.  Early in the morning session, my section gave up an extremely well preserved canine tooth.  

 

Canine tooth (possibly in both senses?)

In my experience finding a canine tooth – especially from a dog – has always seemed to mark the beginning of a good day for small finds – as it proved to be today.  The eastern end of the trench continued to give up early medieval and late Roman finds – including a small piece of Samian ware with its distinctive smooth finish.  The western end – including the section I had been assigned – continued to give up mid-medieval pottery fragments, both green glaze-ware as the day before, but also some dark blue, almost purple with incised decorations.  The western end – including the section I had been assigned – continued to give up mid-medieval pottery fragments, both green glaze-ware as the day before, but also some dark blue, almost purple with incised decorations.  It also gave up a large amount of animal bone and teeth – including some very well preserved cow and sheep teeth.  There were also some fragments of antler found in the eastern end of the trench with signs of having been worked.  The middle section of the trench – at the southern end – also gave up the earliest find so far - a fragment of flint with a worked edge – either a flake from tool making or part of a tool itself – it would take further analysis to establish which is most likely.  While such early finds aren’t unheard of in York, this would be one of the earliest from this part of town which is largely believed to have been inhabited in the Roman period at the earliest – with most of the land plots still following the lines established during the Anglian and Viking era.

Another beautiful example of green glaze - possibly from the base of a vessel judging by the shape at the left hand edge.

The area also gave up some large fragments of vibrantly coloured green glaze-ware - two of which (including the one pictured above) fitted together almost perfectly.  

DAY 4 – Cow Vertebrae and Delicate Glazes

Digging conditions today were good thanks to some overnight rain which had left the ground damp enough to clean back relatively easily, without everything turning to mud.  The eastern end of the trench continued to produce a mix of late Roman and early medieval small finds..  My own section on the western end produced another canine tooth early on in the morning, and it once again proved to be a sign it would be a good day for small finds.  

Two more examples of green glaze - showing the variation in colour and pattern

From my perspective as someone interested in bones possibly the most interesting find were a number of fragments of cattle vertebrae, some of which appeared to have cut marks on - in two cases two fragments fitted perfectly together, produce a complete vertebrae which appeared to be of similar size.  We could speculate that they may have come from the same animal, but it would take further analysis to do more than vaguely speculate.  Later in the afternoon we also uncovered another complete vertebra - against likely bovine, and again likely from an adult specimen,  All of the teeth found appeared to be from mature individuals in terms of both the cattle and sheep teeth - which would fit with what we know of butchery practices at the time.  If these were from the earlier Roman period this would suggest that the area was being used for keeping animals even before the medieval period when the area was associated with the cattle market.    

DAY 5 – Sheep, Goat, and ‘Bird, generic’ 

An incisor from an adult sheep complete with root.

 

The final day of the dig was by far the most sunny, although the temperature remained around 20C.  The sunlight and the lack of overnight rain made for much drier digging conditions.  The western end of the trench began revealing a possible feature in the northern corner.  As it was uncertain exactly what was going on at this end, this was left in favour of connecting the two larger south and southwestern levels down to the orange clay layer exposed by their earlier test pit.  Connecting the two broad strips already taken down to the clay was more difficult going, but continued to give up a variety of pieces of pottery - included glaze ware including both green and dark red fragments - including some examples with small incised designs including some patterns of wavy lines, along with more fragments of animal bone.  It was noticeable that a higher proportion of the bones from this section appears to be primarily from sheep and birds.  The sheep teeth again appeared to be from mature specimens, in keeping with what we know of the butchery practices of the time.  A quick calculation of the minimum number of species suggests that if all the avian bones were the same species we had at least five species - though the variation in the avian bones suggests that there were at least two species present - raising the minimum number to seven.
Eleanor and my efforts at connecting to the two strips led to a discussion about the logistics of the Channel Tunnel - and a moment of what might be called generational culture shock at the reminder that the breakthrough of the Channel Tunnel had taken place in December 1990, over thirty five years ago.  Interesting the earliest proposals for a tunnel date from 1802.  The day also included a discussion of the logistics of carrying three takeaway bubble teas while cycling - which led Amy to coin the phrase 'Bubble tea papoose' - possibly the quote of the week. 


Wrap Up

The excavations in this part of Walmgate have provided a lot of interesting evidence as to the occupation of this part of the city in the Medieval period, as well as suggesting that this area was also inhabited during the Late Roman era - something which had been suggested before, but of which there is only partial evidence.  While the excavations did not find the remains of the lost medieval church of Saint Peter-le-Willows - they do give us some more information about the layout of this part of the city - which might one day in future help us to determine where this particular building stood.  The various artefacts each shed some more light on the day to day life of the Walmgate area during the past, from the decorated glazeware vessels to the animal bones, to the small fragments of antler which were found amongst them.  Each adds to the picture we have of human habitation in this part of the city and helps us gain insight into just how the area has evolved and changed over time, from the animal pens and hand decorated pottery vessels, to the foundations of the Hope Street school that taught students how to operate the telegraph, to the modern day, and with the former care home site now scheduled for demolition and redevelopment, the next stages in the story of the area.