Thursday 24 July 2014

Day 17: Farewell Trench S, You Served Us Well...

Today we say goodbye to rubble in three of our trenches, goodbye to old theories in another and, finally, goodbye and farewell to one trench which has now been fully excavated and recorded.

Trench N
All the rubble in trench N has been completely removed, leaving many areas of pristine soil which probably indicate the medieval ground level. Within the building itself, a band of orange clay against the east end of the church, which is also defined by a row of stones, may indicate the place where the altar once stood, although further investigation is necessary. Amongst the finds recovered today are multiple fragments of lead sheeting, which were once part of the roof, painted wall plaster and a very fine medieval bone parchment pricker.

Trench P
Trench P has also had all its rubble removed, and three doorways have been found leading into various rooms within the complex: a stone doorway levelled by tiles leading into the brick building, another stone doorway levelled by tiles leading into the church and a wooden framed doorway leading between two rooms within the brick building. We have also found lots of window came and glass indicative of the building which once stood on the site. Having removed all the post-medieval demolition, in the next few days we hope to finally start excavating some of the medieval features associated with the hospital.

Trench R
Once again, Trench R is looking very clean, tidy and empty. The floor layer within the building has been removed revealing orange sand throughout the trench. However, although it may appear empty, there may be features cut into the sand which we cannot see as the current dry conditions means it is extremely difficult to see differences between contexts. As a result, we have sprinkled water across the trench and are allowing it to soak in overnight, meaning that tomorrow we will be able to decide whether it is necessary to continue excavation in the trench. 

Trench S
Trench S is no more. Its pristine white walls and brown floors have been completely planned, the sides (sections) of the trenches have also been drawn and the final photographs have been taken. As a result, Trench S will not feature any further in this year’s blog. It has, however, achieved exactly what it was meant to; we have proved the geophysics to be correct, we have demonstrated that there was a white building in White Stable Close and we have also retrieved evidence that the building had at least two, and possible three, changes. As a result, we should celebrate the work of Trench S as well as commiserating with Courtenay on its demise!

Trench T
Once again, Trench T has decided to surprise us and present irrefutable evidence that our previous theories have been wrong. It is not a brick kiln as we first thought, but is instead a lime kiln. Once the rubble had been removed from the kiln interior, a thick layer of slaked (decomposed) lime was revealed, including several burnt, but largely whole, limestone blocks. The presence of a lime kiln within this area is mildly surprising as the surrounding geology is sand and river clays rather than limestone, where such kilns are usually found. However, one of the burnt limestone blocks displays clear toolmarkings which match those found on upstanding masonry within the abbey precinct. As a result, it would appear that our structure is a post-medieval feature taking advantage of the many limestone blocks within the hospital and using them to produce lime. This is an extremely important material in agricultural practices, including reducing the acidity of sandy soil for crops and as limewash for the exterior of buildings. This may also explain the odd robbing practices within the hospital as, rather than taking all the stone to build housing and other structures, parts of the building were taken piecemeal for lime as and when the need arose. However, whilst we are extremely confident of this latest theory, it may not be the last time that Trench T decides to bamboozle us!

The bone parchment pricker from Trench N
We are almost entering the final week and in many cases we are only just starting to excavate the medieval layers. As a result, Week 4 may be our busiest yet and, during a period when most excavations would be winding down, we will be pushing forward to investigate the medieval occupation of our buildings. Let’s just hope our diggers are as eager, willing and able as they have been until now!