I initially wrote to Allen Archaeology to see if I could gain experience of geophysical surveys in a commercial environment: the equipment used, data analysis and how this relates to the archaeology of the site. I am a geophysics student at University of Southampton, I don’t specifically study archaeology unless chosen as a specialism, but Allen Archaeology kindly offered me a month long volunteer placement. When I started I didn’t know much about archaeology at all; how the two fields of study were related was something I was very keen to learn!

I was immediately put onto a project with the Geophysics Project Officer, Rob Evershed. We were to use magnetometry to survey the subsurface of the Lincolnshire countryside and detect any potential archaeological sites. The survey techniques themselves were very similar to the geophysics I had completed on field trips at university: marking out the survey grids before walking a magnetometer over the ground. The only difference was the equipment had a much higher resolution and is far more expensive to run.

The data analysis on the other hand was completely new. The results were produced in a program called Terrasurveyor and were completely different from magnetometer results I had previously seen. Instead of looking for geological structures as I have done at university, we wanted to find archaeological sites. Rob was great at pointing out distinguishing features in our data and explaining their significance; such as land drains, old roads and other details which would have been inconsequential to someone untrained in archaeological geophysics. Rob taught me how background research into the area and georeferencing of old maps onto modern ones could reconcile anomalous geophysical results with archaeological evidence.

When I haven’t been out in the field I have been able to help out around the office; completing small tasks on QGIS, washing artefacts and trying to piece together a Roman tablet. I’ve had the chance to explore the archives and learnt a lot about the differences in pottery from various periods; I also had the shocking experience (for a non-archaeologist) of coming face to face with a skull!

During my time with Allen Archaeology, I have become more confident in the use of magnetometers and GPS with geophysical surveys and developed my knowledge of computer programs such as QGIS and Terrasurveyor. I have learnt how to interpret geophysical surveys and use them to find archaeological remains; and most importantly through Rob’s instruction, I have learnt how to compare the archaeological evidence (e.g. pottery) in a field with the geophysical data collected and been able to draw conclusions about the history of the area based on all the evidence. I have enjoyed my experience with AAL a lot and when I return to university in September, I am definitely going pick a couple of archaeology modules to compliment my geophysics studies.