Over the weekend work on the dig has been progressing, but it isn't all digging and discovering new artefacts. Dr Larry Conyers from Denver University (USA) visited to see why the ground penetrating radar (GPR) on the car park before the first dig was unsuccessful. Dr Conyers specialises in the use of GPR in archaeology and wanted to see if he could locate some of the walls of the Greyfriars Friary under the rest of the car park. We will have to wait and see what the results are but I have my fingers crossed that the adjustments will work and the walls will show up on the radar this time!
Another job that was done this weekend was creating a grid on the dig. The grid is used to measure where walls and finds are when it is time to begin the drawing stage of the dig. It is a bit like creating an x and y axis on a graph, but on the ground. For those that are familiar with Ordnance Survey maps it is the same process as that. We lay out one axis line running north-south through the dig and another at right angles to it going east-west. We can then measure off these lines and create a squared grid over the whole site – If you go down to the dig now you will be able to see the short posts with yellow caps marking out the gridlines. The grid can then be used to create a map of the archaeological layers and features revealed – walls, floors, graves etc. We can also record an accurate position for an individual findspot using a ‘grid reference’.
Keep up to date with the progress of the Grey Friars Dig Part II throughout July 2013 via regular updates on this site. The body of King Richard III was discovered here in 2012 – who and what else lies beneath this now-famous car park?
There is a selection of images on our Flickr channel