As the days get shorter and the number of times you have to defrost the car in the morning rises substantially, the chance of large gatherings and feasting also increases. People try to figure out how to fit large numbers of guests in their homes, share their news and hopes for the upcoming year and, sometimes, settle business. Thinking about castles as warm and lively places is not necessarily the easiest when they present a cold, wet, bare-stoned backdrop to our lives today but the gathering of people and feasting would have warmed the halls of lords as well.
While huddled over a steaming cup of tea or mulled wine and eating mince pies, I invite you to take a moment to consider a winter gathering that took place at Huntly Castle (Aberdeenshire), the seat of the Gordon family. Huntly is well known for its magnificent inscription commemorating the marriage of George, the Sixth earl of Huntly, to Lady Henrietta Stewart in 1588 and the surviving heraldry within the 16th century palace block, but it has a long architectural history.
There have been three major stages of building at the site of Huntly Castle. First, there was a 12th century timber motte and bailey castle known as the Peel of Strathbogie. Second was an early 15th century L-plan tower. Third was a mid-15th century palace, built in partial conjunction with the establishment of the property as an earldom. Although the palace has been remodelled in the 16th and 17th centuries to what we see in ruins today, the basement largely consists of the first stage of this palace block.
A small gathering of people took place during the first stage of the palace block and the life of the Second Earl of Gordon, George (earl from 1470-1501). On 12 January 1492, George, Earl of Huntly and Lord of Badenoch, passed the lands of Auchannochquhy in the forest of Boyne in the county of Banff to Walter Ogilvy of Boyne and his heritors. This charter was witnessed by Richard Strathquhayne, Prior of Monymusk, Patrick Berclay, lord of Grantuly, James Abirnethy, son and heir apparent of George Abirnethy of Uggistoune, Andrew Hay, D. Patrick Grantuly, rector of the church of Glas, and D. John Andrew, vicar of the church of Bocarne in diocese of Moray. This charter was later confirmed by James IV on 3 December 1495 at Perth (RMS, Vol II, 2289).
Judging from the locations identified with the names of the witnesses, most came from a relatively short distance (under 10 miles) from Huntly Castle. The prior of Monymusk seems to have travelled the furthest, at approximately 24 miles, and is likely to have been seeking accommodation. These six witnesses were likely accompanied in their travel to Huntly Castle but there is no reason to suspect a large retinue. Although it is not necessarily a gathering that suggests a feast of celebration, it was not uncommon for this kind of business to take place at such a gathering. The Christmas celebrations had finished and it may have just been a gathering of neighbours.
The record of this gathering clearly reflects business but is also a gathering of neighbours and acquaintances in witness of this transaction, whether as an aside to an already gathered feast or specifically for this occasion. Against the darkness of a Scottish January, this gathering is a small remnant of the warmth of gathering neighbours, likely drinking warm drinks around a fire, while discussing business among other things.
This post was written by Louise Martin, Cultural Heritage Officer for Morecambe Bay Partnership
Gleaston Castle is a gem of a site; a little known and poorly understood courtyard or enclosure castle, located in the beautiful Furness Peninsula. The history of the site is scant and whilst it has been the subject of antiquarian and more recent documentary research, its origins and reason for construction still remain unclear. Some writers have proposed that the castle was constructed in the early 14th century as a response to the Scottish raids, although the site is not mentioned in documentary sources until some 30 years after these raids and may simply be a reflection of the wealth and status of the Lord of the Manor.
Today the site survives as the ruins of three towers with an associated curtain wall. As a Grade I listed building and Scheduled Monument this unique site is protected from development or destruction, however, this site is currently on the Heritage at Risk register with many conservation concerns.
Its crumbling stature is not new, the site is believed to have been dismantled after it ceased to be a manorial residence. It was described as a ruin in the mid-16th century and is depicted as such in engravings from the early 18th century.
Whilst the site was subject to antiquarian attention, with plans and descriptions produced in the early 19th century, I was surprised to discover that the site had never been fully recorded, in particular the elevations of the structures which survive from its original layout.
To bridge this gap in the archaeological record and gain a better understanding of the site, Morecambe Bay Partnership applied to the Castle Studies Trust for a grant in late 2014. I was thrilled and delighted to hear the news that our application had been accepted and a generous £5,000 grant had been awarded to enable an aerial photographic survey and 3D model of the site to be produced. In addition, the grant would fund the production of a conservation assessment, outlining the historical background and current issues for the site.
Greenlane Archaeology Ltd. was commissioned to run the project, bringing in professional archaeological photographer Adam Stanford from Aerial-Cam to undertake the survey work. During the summer of 2015 Adam flew over the site with Remotely Piloted Aircraft (RPA)-a DJI Inspire 1 quadracopter fitted with an X3 gimballed camera producing still images at 12 megapixels. Professional photographers, such as Adam, have to follow strict guidance and regulations as part of their licence to undertake such work.
The photographic record from the air was supplemented by high-resolution (24 megapixel) images captured with a high-level telescopic pole and more traditional ground-based photography to obtain close up images of the structure.
Over 600 overlapping photographic images were taken to capture a detailed record of the site. Back in the office Adam used Agisoft Photoscan to process the data collected. The results were stunning, including aerial images and the creation of a 3D model, which enables the site to be ‘explored’ from the safety and comfort of a PC or tablet through Sketchfab.
One of the most important outcomes of this project was the detailed orthophotos that were captured of the elevations of the castle’s ruins. We have been using these images to inspect the construction and conservation issues for the site, but primarily they form a permanent record of the castle that was lacking until this survey in 2015.
The aerial image and subsequent grey scale shading was particularly informative revealing furrows and a possible track way to the north-east of the castle. The track appears to lead to the north-western tower, the largest structure at the site and probably once the manorial residence. Within the curtain walls, areas of terracing and possible building platforms could be identified – but what could they be?
Supplementing the photographic work Greenlane Archaeology also undertook a topographic survey of the site to complement and enhance the results obtained.
In August 2015 we were delighted to host some of the trustee’s from the Castle Studies Trust (CST) along with supporters of the CST charity, who travelled to the Furness Peninsula to see the survey work in action. We were joined by the Historic England Heritage at Risk Officer, the Lead Archaeologist from Cumbria County Council, and Helen Evans who had compiled the Conservation Statement. Adam from Aerial-Cam gave a detailed demonstration on how the RPA captures the photographic images and how these are enhanced and combined to form the incredible 3D records of the site.
To put the site of Gleaston into context, the visitors were also taken on a tour of Piel Castle, which can be seen from the elevated position of the north-west tower at Gleaston. Piel Castle is positioned on a tidal island and we had to use the local ferry service to reach the site.
It was some months later, during discussions with Dr Richard Peterson and Dr James Morris of University of Central Lancashire (UCLan) Archaeology and Anthropology Department that the next piece of fieldwork was being determined. Each year UCLan host a field school for their first year archaeology students and the team were looking for a site to use to teach the concepts and theories of geophysical survey and laser scanning. We had some interesting research questions to answer, which had been formulated following the photographic survey – do any buildings survive within the courtyard formed by curtain wall and what are the features shown to the north of the castle? Together we thought that Gleason was the ideal site for this year’s field school.
Before any plans to be laid out we had to get permission from the landowners to allow this work to go ahead. Once this had been secured, we had to apply to Historic England for a Section 42 licence, as the site is Scheduled and such work is strictly monitored by Historic England inspectors.
Permission was granted for the work and the fieldwork was scheduled for the end of April 2016. In addition to UCLan students, the survey training was opened up to the community, with fifteen places available per day through the Heritage Lottery Funded Headlands to Headspace (H2H) Landscape Partnership Scheme, which I am currently running part of for Morecambe Bay Partnership.
On 25th April we started the work at the site, using earth resistance and magnetometry to survey areas within the curtain wall and to the north of the castle, where we had identified ridge and furrow and the track way. The training attracted participants from as far afield as Liverpool and Carlisle as well as some local residents to Gleaston Village. The north-west tower was also subject to detailed laser scanning, which will supplement the photographic record produced by Aerial-Cam. The weather was, well, challenging especially for the end of April with heavy downpours and even snow hampering our progress on site!
The team of students, together with volunteers and the fabulous UCLan staff persevered and we completed a significant amount of survey across the site. The results of the survey work are currently being processed by the team at UCLan, however, initial interpretation of the data is highlighting garden features to the north of the site and possible post-built structures to the south-west of the courtyard.
All this recent work is enabling professionals to gain a better understanding of the site. For the first time we have an accurate photographic record of all the standing remains and have started investigating what below-ground remains may survive beneath the soil.
Morecambe Bay Partnership would like to thank the Castle Studies Trust and all their supporters for enabling the survey work to take place and highlight the importance of this site and the conservation issues the site currently faces.
We would also like to thank the landowners who have provided us with special permission to undertake this survey work and the team from Historic England and Cumbria County Councils Lead Archaeological Advisor who have provided advice and guidance along the way.
It is hoped that the work undertaken so far will be built on in future years with additional survey and assessment, finding positive solutions to protect this rare and fascinating site.
Some of the Castle Studies Trust’s projects have made innovative use of cutting edge technology. Nick Tarr explains how a new survey technique was used this year at Pembroke Castle.
Geophysical Survey Technologies (GST) was formed to improve survey equipment for archaeologists to use in all environments including equipment suitable for use in woodlands. The equipment, ideally, should be within the financial reach of amateur groups.
The prototype survey frame resulted from research into voltage surveys (commonly called resistance surveys) where geology or other conditions are unfavourable for conventional methodology. The frame uses a commercially available data logger and power supply but has all four electrodes on a compact mobile frame which is collapsible to fit in boot of a car.
The version used at Pembroke Castle was aimed at keeping the energy from the power supply within the archaeological layers so maximising any opportunity of detecting any archaeology present. A comparison with the conventional twin array in both parallel and zig-zag walking modes was made over a single grid which contained part of a building and a track. The existing twin array frame gave no clear signal for the building, the track was the only major feature seen.
The prototype frame gave much better results. A further test across a monastic site in west Wales has also shown improved results over the conventional twin array methodology. Development work continues.
Gleaston Castle, April 2016. Written by Matthew Emmott.
Throughout the week of the 25th to the 29th of April, the Morecambe Bay Partnership and the University of Central Lancashire’s archaeological department teamed up to give a lucky few a golden opportunity to take part in a further survey of Gleaston Castle in Cumbria.
Following on from the aerial survey undertaken at the end of July last year using a grant from the Castle Studies Trust, it was hoped that any buried structures beneath the courtyard would be identified and mapped out. Adam Stanford’s 2015 survey (Aerial-Cam) used the latest in drone technology, utilising high definition photography\photogrammetry to capture the full character of Gleaston’s ruins, and in the process produced some intriguing survey results pointing towards the possible remains of buildings and platforms beneath the courtyard.
Tools on offer to assist in the survey, and provided by the University of Central Lancashire’s Archaeological department, were ground penetrating radar, a magnetometer, an electrical resistivity meter, high definition cameras and laser scanners.
Aided and abetted by Louise from the Morecambe Bay Partnership, volunteers and students were taken through the process of mapping out grids and the use of the equipment. And then the real work was done. By the end of the week it looked as if the whole of the courtyard had been scanned using all the available techniques…..all we have to do now is wait for the results and hope that Gleaston has at last given up some more of her secrets.
In 2015 the Castle Studies Trust and the Morecambe Bay Partnership worked together to record the remains of Gleaston Castle in Cumbria. By using an unmanned drone to photograph the castle we were able to reach every part of the building. Below is an excellent explanation from Museum of London Archaeology’s Dr. Peter Rauxloh of how this technique works. It was originally published on MOLA’s blog.
Archaeologists have known about the benefits of investigating archaeology from an aerial perspective for more than 150 years, arguably longer, but the day-to-day use of aerial survey in MOLA’s work has been hampered by cost.
The model drone was a very popular Christmas present last year; a clear indication that cheap aerial photography has arrived. The big innovation from the perspective of archaeological aerial survey is the arrival of affordable digital photogrammetric software and automated flight control.
Photogrammetry is the practice of taking measurements from images. It is based on the fact that the position of an unknown point in 3D can be calculated if it is viewed from at least two other known points. This is the principle of triangulation, as important to map makers in the 17th century, as it is today.
The software in question uses the principle of photogrammetry and applies it to the processing of digital images to create 2D orthomosaics and 3D models. In essence, the traditional technique of aerial photogrammetry used a small number of high quality images taken with expensive specialist cameras from real aircraft, on which a small number of common points were identified between adjacent images. The new method uses a large number of images, taken with a standard consumer grade digital camera from cheap aerial platforms and is able to identify thousands of common points between images. Thus the technique tightly locks together overlapping areas to create robust orthogonal mosaic and highly detailed 3D models.
The amount of overlap required between images in order to create robust models is very high, typically 75-85% between each successive image. This means that 85% of one image must still be visible in the next image, but how does one ensure that critical degree of overlap is maintained?
Typically an aerial survey will be flown in a grid, much like a tractor ploughing a field, and each successive image needs 75-85% overl ap with its predecessor. Moreover once it has turned and starts to fly back over the site, it must also get 60-70% overlap between the images on each leg. For small survey areas the aircraft is flown manually since it is easy to ensure the area is well covered with images, but it is far more difficult to maintain the required consistency on a large site. This is why MOLA use an autopilot and have it follow a flight plan.
A flight plan is a group of 3D coordinates or waypoints between which the aircraft navigates using its on-board GPS. To position these waypoints so the images overlap a number of variables need to be balanced. These include the camera’s field of view, frequency of image capture and the desired flight height and the speed of the aircraft. These in turn need to be considered against the size of the area to be flown and how long the aircraft can safely stay in the air.
Below you can fly round the model of Gleaston Castle.