The next phase of work to discover more about the history and remains of the castle took place on the 19th and 20th May with Gorebridge Community Development Trust , volunteers , Archaeology Scotland and Alistair Wilson from Rose Geophysical Consultants LLP:
Geophysical survey of the ground around the castle (with Section 42 Scheduled Monument approval from HES) led by Cara Jones, Archaeology Scotland, and Dr Susan Ovenden and Alistair Wilson from Rose Geophysical Consultants LLP.
Rose Geophysics spent one day studying the site to find out which type of survey would be most appropriate for the ground conditions, and carrying out a resistivity survey of the whole site.
The following day they ran a workshop describing and demonstrating the three main methods of looking for archaeological ruins underground. These were:
• Gradiometer survey: using magnetic fields - was considered unsuitable for the site due to the high magnetic levels in the area;
• Resistance survey: maps to a depth of approximately 0.75m. Measurements taken at 0.5m intervals was used over the whole site;
Ground penetrating radar (GPR) survey: a more accurate method of finding buried stone was carried out in targeted areas based on the results of the gradiometer and resistance survey. Surveyed with a 500MHz antenna that provides excellent lateral and near surface resolution and can retrieve data to a depth of approximately 2m. Data was collected at 0.02m intervals along parallel traverses 0.5m apart.
All the results of the investigations / exercises in Phase I will be kept in the GCDT history archive for public viewing. They will also be submitted to Historic Environment Scotland and help inform future plans for the site.
Phase II....the next phase
Assess all the information including surveys and historical evidence to form a picture of how the land around the castle was used.
Agree if any test archaeological excavations would be useful for the assessment.
Ask that the scheduled monument area be extended to include more ground to the North and North West of the castle.
Apply for grants, including a Heritage Lottery grant, to: employ a watching brief; archeologist / engineer to monitor the stability of the stone walls while volunteers remove stones from around & within ruins to original ground levels of castle, thereby exposing more stone and giving a better sense of what the castle looked like; consolidate remaining walls, replacing any stones that have fallen since the project started; display dressed stones tin protected environment.
Volunteers to keep the vegetation down on the ruins. Midlothian Council to maintain the lawn area within the path.
Competition to design a 3-D model of what the castle would have looked like when complete, for schoolchildren and local residents. It can be digital e.g. Minecraft or physical e.g. Lego.