Barrow-Loads of Barrows: Excavating a Monumental Pictish Cemetery at Tarradale on the Black Isle

by Eric Grant

Drone aerial photo showing barrows of different sizes and shapes (Drone photo: Andy Hickie)

In the first three weeks of September 2019 volunteers from the North of Scotland Archaeological Society supported by members of the local community excavated a suspected Pictish cemetery in a field near Tarradale House. Aerial photographs had previously shown the possible existence of a number of barrow graves in the area but there was little to see on the surface as the mounds had been almost totally ploughed away but their surrounding ditches appeared as ghostly outlines on the aerial photographs. A small, but growing, number of barrow cemeteries has been identified in Scotland but only a few excavated. Aerial photographs show the remains of at least 28 square and round barrows at Tarradale making it currently the second largest burial ground of this type in Scotland. The site could originally have been more extensive as parts of it have either been ploughed out or are too deeply buried to show in aerial photographs. Recent high-resolution photographs taken by drone have suggested the existence of more barrows towards the perimeter of the field and possibly into an adjacent field. Our excavations showed that Tarradale was a barrow cemetery of monumental proportions and potentially one of the most important in Scotland.

Although we are still waiting for radiocarbon dates from the Tarradale excavation, the presence of round and square barrows and their spacing and distribution leaves little doubt that we are dealing with a Pictish cemetery potentially from the 5th or 6th century AD, an important period in the formation of early kingdoms in northern Britain. Tarradale lies in the eastern side of Ross-shire on the Beauly Firth and only six miles from Craig Phadrig, an important stronghold and regional capital in the Kingdom of Fortriu. Part of this centralisation of power was reflected in the creation of monumental cemeteries and Tarradale may have been the burial place of the local elite. No Pictish symbol stones have been found at Tarradale, although symbol stones, including cross slabs with symbols on them have been found in adjacent parishes, the nearest being the recently discovered Conan stone three miles from Tarradale. However, in the same field as the barrow cemetery, a fortified settlement was excavated in the 1990’s; no primary dating evidence for the Picts was obtained but on stylistic grounds pottery from the fortified site has been dated to between AD 300-800 so this may well be the settlement focus of some of the people buried nearby.

Plan of barrow cemetery trenches (plan by Steve Birch)

Droning on about Tarradale

by Andy Hickie

Drone image of Tarradale Through Time barrow cemetery dig, as featured in “Current Archaeology” November 2019.

Back in 2017, I caved in to the demands of consumerism, and purchased a new quadcopter, a Phantom 3 Advanced, which is equipped with a camera and GPS unit. I flew multiple flights around Avoch but, after a while, the novelty of seeing one’s house from the air at different angles and altitudes begins to wear thin, and I began to wonder what I could actually do with a drone. Having always had an interest in archaeology and, spurred on by seeing some of the images Alan Thompson of NOSAS had created, I decided to carry out a few experiments of my own.

My first flights took in locations such as the distillery and settlement at Mulchaich, and the features of Kinbeachie castle – sites which had already been mapped by Alan by drone, the results of which I could use as a ‘benchmark’ against which I could compare those of my own.

At the same time, I began experimenting with various flight planning apps which allow for off-line autonomous flight planning, as well as online platforms for image processing. I found that “DroneDeploy” and “Mapsmadeasy” combined provided a fairly user-friendly pipeline, whereby image capture and photogrammetry can produce georeferenced photomosaics and digital surface models (DSMs). These can then be imported into software such as QGIS for further processing.

Having found the software which satisfied my needs, I then turned my attention to potential sites which I could map – and decided on the cropmarks of the Barrow Cemetery at Tarradale. At this point, my intent was purely to satisfy my own curiosity – just to see what I could see, and how it would compare with the archaeology found at the forthcoming 2019 dig.

And so, on 10 June 2018, accompanied by my daughter Emma to act as co-pilot and “spotter”, I visisted Tarradale to map the area with the drone. I can still recall the excitement I felt as the images began to appear on the monitor of the remote controller, which showed the cropmarks were developing. However, my satisfaction was tempered somewhat when I got home and began to process the photographs. Although the cropmarks were indeed evolving, the crop was insufficiently ripe, and many of the details remained hidden (see image below).

TARRADALE THROUGH TIME: community engagement with archaeology in the Highlands

by Dr Eric Grant (NOSAS)

Trench 2B at Tarradale during excavations in October 2017.

Background to Tarradale through time

This blog sets out some of the recent developments in the TARRADALE THROUGH TIME project (see website), a NOSAS led project that commenced in 2017 and is supported by the Heritage Lottery Fund and Historic Environment Scotland and private donors. TARRADALE THROUGH TIME grew out of the earlier Tarradale Archaeological Project which is still ongoing as a mainly field walking and data gathering exercise – see Tarradale Archaeological Project blog . Field walking over the last few years has produced a great deal of data which has been recorded and mapped and the patterns emerging from mapping and analysis suggest that there were several important archaeological sites within the Tarradale study area that merited further investigation. A detailed research project was drawn up as a multiperiod investigation and given the name of TARRADALE THROUGH TIME. The sub title of the project is community engagement with archaeology in the Highlands, as one of the aims of TARRADALE THROUGH TIME is to engage with the local community in order to widen access to heritage through research and understanding and to underline the premise that archaeology belongs to the community and not just to the archaeologists who explore it. The Tarradale Through Time website can be found at www.tarradalethroughtime.co.uk.

Community volunteers at the Tarradale castle site excavations, September 2017.

The Heritage Lottery Fund awarded the project a grant in 2017 and additional funding for specific aspects of the project was sought from Historic Environment Scotland. TARRADALE THROUGH TIME is focusing on five specific subproject areas for excavation and one subproject for detailed surface survey. These were chosen to give as wide a chronological range as possible in order to investigate the relationship between the inhabitants of the Tarradale area with their environment and landscape through time. The currently formulated subprojects are

• investigating through test pitting and larger scale excavation Mesolithic (and potentially later) shell middens
• a large barrow cemetery potentially dating from Bronze Age to Pictish
• a large ditched enclosure with internal structures also likely to date from Bronze Age to Pictish
• a small Inland promontory fort of unknown age
• a ditch defended enclosed settlement of possible medieval date
• the site of the historically recorded Tarradale Castle but whose exact location is unknown
• surface survey and investigation of deserted postmediaeval agricultural townships or settlement clusters.

Jim Bone: Aerial Photography of Archaeological Sites

Jim was a founder member of NOSAS, which celebrated its 20th anniversary in 2018. He was known in the Highlands for providing important aerial photos of numerous archaeological sites over many years. Sadly, Jim died on June 16^th, after a long and wearisome illness. His extensive collection of aerial photographs has been gifted to NOSAS and will form the JS Bone Collection, in his memory. This is the story he wrote of himself, in the months before he died. (Introduction revised Sep 2018).

Aerial photograph of Mulchaich, Ross-shire. The settlement , distillery and chambered cairn at Mulchaich were the subject of NOSAS projects between 2009 and 2013. See the blog post.

It appears to me that people can be divided into two categories – those who love flying, and those who do not.  Brought up in close proximity to Prestwick Airport, I recall watching aircraft there, and determined that I would one day find out more about aviation.  Inspired by a selection of Biggles books, I joined the local ATC (Air Training Corps) squadron, enabling me to sample flight for the first time in 1950 in an elderly Anson.  Military aircraft have a distinctive odour of aluminium and oil, complemented in this case by an off-putting whiff of vomit, but I enjoyed this first ‘air experience’ flight along the Ayrshire coast.  For the next flight, I borrowed a folding camera, and tried a few shots through the rather scratched Perspex window.  Surprisingly, the results came out quite clearly, and another interest was born.

Going to University in Glasgow, I lost no time in finding the HQ of the University Air Squadron (GUAS), and was fortunate enough to be accepted as a Cadet Pilot in the RAFVR.  This offered a high standard of flying training, during 1953-7, provided by experienced RAF instructors at Scone Airfield outside Perth.  Our Chipmunk aircraft was state of the art at that time, but cameras were not encouraged on training sorties.  At the end of my four years, I asked if I could take a camera with me on a dual flight with my instructor, having noticed some archaeological sites which I wanted to photograph.  By opening the hood, I was able to take quite a good shot of a hill fort to the south of Perth, which presaged further attempts in later years.  The Squadron experience qualified me for a Preliminary Flying Badge – a sort of junior wings – and allowed me to apply for a Private Pilot’s Licence, costing a very reasonable ten shillings, when I left the unit.