Archaeologists have been on site at York Castle Museum as part of our plans to recreate a former prisoners’ yard, writes museum manager Ian Carlisle.
As you may or may not know, the space “between the wings” of the former Debtors’ Prison building (or the South Building) was a prison exercise yard in the eighteenth century.
It had a low wall across the front, topped with railings to stop the prisoners escaping, and a gate in the centre for access. The citizens of York used to come and gawp at the prisoners exercising in the yard.

Eighteenth century view of the Debtors' Prison. The low wall and railings can be seen running across the space between the wings

Cropped print of another eighteenth-century image, showing a close-up of the low wall, railings and gate
We are hoping to reinstate the wall, railings and gate and resurface the yard so that visitors can go into it as part of the York Castle Prison exhibition.
Before we can do this, English Heritage have insisted that we carry out a small scale archaeological excavation to define the position of the wall, to make sure we rebuild it in the correct position. They also wanted us to try to find out what the original yard surface consisted of.
We contracted On Site Archaeology to do the work and they spent three days excavating three trenches:

General view of the site. One trench can be seen across the yard in the foreground, where the remains of a wall running diagonally across it were found. This may be remains of one of the medieval castle buildings. There is a second trench at the corner of the building, middle left, to locate the low wall, the third between the two diggers, also to locate the wall.

Trench to locate the position of the low wall. The diggers think they have found the end of the wall next to the wrought iron access gate here.

Excavating the trench at the corner of the right-hand wing. This trench was to find the position of the wall where it meets the building, but it also shows the foundations of the building.

Close-up of the above trench. The arrow points to the foundations for the building, which are very shallow for such a large structure.

One interesting find was that of the base of a Romano-British pot. It was possibly a beaker, something like the Nene Valley Ware example below, but it is impossible to tell its exact form from such a small sherd. At the end of the life of the pot, such bases were commonly used as gaming counters. It was found in disturbed soil so does not necessarily indicate Roman activity on the site

Nene Valley beaker
Unfortunately, there was no indication of the original surface of the yard. The excavation team initially thought a layer of cinders could have been it, but a later drainage trench did not cut through it, so this theory was abandoned.
The next step is for the archaeologists to report back to us and to our architect before we decide how to proceed.
