The NOSAS Crannogs Project – Update, December 2022

by Richard Guest

The Crannogs project has now been running for a couple of years.  Starting as a desktop exercise, we have now progressed to some site investigation and have managed a couple of dives.

A second phase of desktop study is underway and a picture of potential crannog occurrence in Wester Ross, Lochaber and Badenoch is beginning to emerge.  Wester Ross has been a real challenge to study, with literally thousands of lochs and lochans, liberally scattered with innumerable islands.  Many of these will be natural and picking out those which may be man made is no easy task.

Loch Achilty crannog (HER MHG7791, Canmore 12472) being easily accessible, had already been snorkelled and this verified that it was an artificial island, so it was chosen as the first proper dive.  Duncan Ross from the Nautical Archaeology Society joined me for two days diving in August and you can find his blog on the experience elsewhere on the website, so I will not go into too much detail.  Travelling in the good ship “Haggis” of the Blackburn line, (a tiny rowing boat ably skippered by Dave Coombs) escorted by the canoes of James McComas and Steve North, we made landfall on the crannog, donned our dive gear and plunged in.

Surveying Loch Achility, August 2022.

We were able to find several substantial timbers embedded in the silt at the base of the stone mound, at a depth of only about two metres.  What these are, is open to debate but some of them appear to go underneath the stones so are probably part of the original construction.  There is certainly the potential to take a small sample for carbon dating and the NOSAS committee will need to decide whether the project is to go in this direction, or whether we continue to just observe and survey.

My Highland Adventure: Diving Loch Achilty Crannog and HMS Natal

by Duncan Ross

During lockdown, apart from eating too many pancakes, NASAC (Nautical Archaeology Society affiliated diving club) member Duncan Ross set himself a grand future task of visiting different kinds of underwater archaeological sites around Britain. This summer he managed to add a couple of unique Scottish sites to his gradually-expanding list.

After around two years of communication, in August 2022 I was invited to help out on a crannog investigation in the fairly anonymous Loch Achilty, just a little north of Inverness city. Assisting North of Scotland Archaeology Society (NOSAS) member Richard Guest and his intrepid team, I spent two days at a most-tranquil setting scuba diving, investigating, recording and taking photos and film of a site that could be anything from a couple of hundred years to a couple of thousand years old. 

Richard Guest explores mysterious timber and rocks around the Loch Achilty crannog: Image: Duncan Ross

Crannogs are a fairly unchartered area in the field of archaeology, and most questions about their creation and the purpose of their locations within lochs remain unanswered and open to speculation. All that usually remains is an artificial island of stones piled on top of one another – artefacts and human traces are frustratingly rare, as are diagnostic patterns that could lead to a method of classification. The crannog centre at Loch Tay focuses on the iron age roundhouse model that was discovered there, but little proof exists that others were constructed and utilised in the same way. The depth of the Loch Achilty crannog, previously unrecorded, is an ultra-accessible 2.5 metres. Needless to say, dive times were extremely long for Richard and myself.

Richard Guest and Duncan Ross prepare to place garden canes around the crannog to aid with measurements. Image: Elizabeth Blackburn

The NOSAS Crannogs Project

by Richard Guest

I have long been fascinated by crannogs. These are articial island dwellings such as the one in Loch Achilty, pictured above (see Canmore).  I remember back in the 80’s tiptoeing across a partly submerged causeway to visit one in a Shetland lochan.  Then, later, visiting the reconstruction in Loch Tay and seeing a TV programme about it.  Later still, whilst on a Nautical Archaeology Society training course I met one of the divers who had been on the Loch Tay project and heard first hand what it was like to make such amazing discoveries.

About 10 years ago, my late wife Jonie and I decided to try and walk out to the Redcastle crannog in the Beauly Firth (see Canmore).  About twenty squelchy steps was enough to convince us that this was a BAD IDEA and we retreated to solid land.  And oh! The smell!  So the next expedition was by boat at high tide and we passed over Phopachy crannog (see Canmore), which we could see on the sounder but could make nothing out through the water.  Another trip at a lower state of tide, we could see the crannog but the water around it was too shallow to approach in the boat.  We didn’t try again.

What we did do was to dive around another crannog, the one in Loch Brora (see Canmore).  The water was so peaty we saw literally nothing.  We knew we had reached the bottom when we felt it beneath us.  I put my hand in front of my mask but couldn’t see it, even with a powerful torch.  I think I could feel some square timber but it might have been a modern fence post caught in weed.

More recently I became aware, through both diving and archaeology sources, of discoveries of Neolithic pottery found underwater around crannogs in the western isles (see Current Archaeology article).  This exploded the received wisdom that crannogs were of iron age to post medieval date.  Then in 2021 NOSAS were lucky enough to have a “Zoom” lecture about crannogs, by Michael Stratigos from the University of York, which is available on You Tube (below). This is when the idea for a NOSAS crannogs project was born.

Achnasoul and Medieval Earthwork Castles in Ross Revisited

by Meryl Marshall

The moated homestead in Achnasoul Wood (NGR NH 48808 51821 Canmore ID: 274702 Highland Council (HC) HER MHG29192) 4kms west of Muir of Ord was visited by NOSAS members on a winter walk in February 2020 just before “lockdown”. The visit renewed my interest in the medieval period in this area and I began some research into the two homesteads of Davids Fort and Achnasoul with the intention of producing a blog for the NOSAS website. It wasn’t long before I realized what a complex topic I had taken on so I decided to split it into two; the first part, on Davids Fort, appeared on the NOSAS website in May 2020, this piece, focusing on Achnasoul, is part two.

The eastern half of the site showing the ditch and double banks with the mound on the right – looking SE

The Achnasoul site is a ringed earthwork with a central mound which was originally interpreted as a “moated homestead” but recently confirmed (on Canmore) as a motte and bailey. It is remarkably well preserved and has been one of my favourite local sites for many years. NOSAS carried out a planetable survey on a cold, wintery day in 2005 (report on NOSAS website at: www.nosas.co.uk/siterecords.asp.) The site remains something of a mystery and seems out of place; clearly it is fortified as it has substantial double banks enclosing a ditch but yet it is situated in low lying ground with higher knolls surrounding it – not a particularly defendable position!

In 2017 the site was scheduled by Historic Environment Scotland (HES) – SM13629. The description in the scheduling document says:               

The monument is a large earthwork enclosure comprising a ditch and two concentric banks which enclose a sub-circular area measuring around 43m northwest-southeast by 39m northeast-southwest within which is a raised mound. The ditch defining the enclosure measures 4m to 5m in width and 1.5m in depth and is broken by two causeways on the northwest and southeast. The outer bank of the ditch is complete and varies in height, reaching a maximum of 2m… Internally, the raised mound lies in the northern part of the enclosed area and is c25m diameter at its base, reaching a maximum height of 2m. The summit is encircled by a fragmentary bank, which encloses an area of around 11m diameter.

The size and form of the visible remains… represents a rare survival of a moated homestead of medieval date.

A processed image of the Achnasoul site from a lidar survey (contains public sector information licensed under the Open Government Licinse v3.0)

Kinellan Crannog, Strathpeffer

by John Wombell

Loch Kinellan, Google Earth 2015.

A few notes on Kinellan Crannog for crannog enthusiasts.  We are fortunate to live at Kinellan, about 400m away from the crannog as the crow flies.  In February this year Kinellan Loch froze over to a depth of 10” and we had days of glorious sunshine when local families were taking their lockdown exercise out on the ice, and we spent an afternoon on the crannog taking photos and  chatting to neighbours and their children. About 15 years ago I remember leading a NOSAS visit out to the island during another big freeze.

Kinellan Crannog taken from the south shore looking north, February 2021.

Some years ago 4 NOSAS members obtained permission from Historic Scotland and the owner to remove some fallen willow that had tumbled into the loch on the south side, in order that locals and visitors could see from the shore track the Medieval stone work surrounding most of the artificial island.  That was two days of very hard work, hand winching fallen trees back out of the loch then cutting them up.   Seeing young children exploring the island this February made me wonder whether the crannog was ever a family home with children playing or had it always been a male dominated stronghold.

Fraser’s 1916/17 report of the 1914/15 and 16 excavations was published in the PSAS and is available online. It is compulsive reading and I shall not spoil it for you by delving too far into the report.  Mr Fraser was a teacher in Dingwall and was only able to supervise the excavations part time and during school holidays.  With WW1 raging he had difficulty finding workmen but he eventually found two local men and all work appears to have been done with spades.  There is no mention of trowels.  He did however engage a Dingwall architect to make measured drawings and another teacher to make sketches.   A third person undertook the photography.  Fraser was as thorough as he could be at that time and he records a lot of detail.  I do not know whether there is an official archive stored away somewhere but a century on I think an updated expert re-interpretation of Fraser’s work would be a good starting point for new research.

The last known use of the crannog was as a kitchen garden and orchard by the tenant of Kinellan Home Farm in the late 19^th and early 20^th C.  A thicket of old fruit tree rootstock scrub still survives and few tangled gooseberry bushes.  Today though the crannog is dominated by dense mature ash and willow trees, an occasional gnarled Hawthorn and two very fine birch trees.  Many of the willows have fallen down, most are dead and rotting away but a good number, especially those that have tumbled into the loch remain alive and have produced masses of new stem growth called Phoenix growth – raised from the dead!

David’s Fort Revisited – and a Strange Coincidence?

By Meryl Marshall

With movements restricted due to the coronavirus pandemic it was inevitable that I would find myself at David’s Fort, near Conan House, just 2kms from my home. This impressive earthwork, variously interpreted as a “motte”, a “moated homestead” (OS map) and a “moated site” has received lots of attention from NOSAS in the past, see Marion Ruscoe’s blog of 2016, but the site remains as mysterious as ever. I was pleased to see that the area is much more open than it used to be, but the surrounds are rapidly becoming overgrown with scrubby brambles, broom and whins. The visit set me thinking once again about the origins and history of the site, with more time at home I set about some online investigations.

David’s Fort (Canmore ID: 12866, Highland Council HER: MHG8986) is at NGR NH 5394 5328 and consists of an impressive wet ditch 4m deep enclosing a trapezoidal area measuring 25m from N to S and 26m to 32m transversely. The ditch is enclosed by an external bank standing up to 3m height but 1.5m externally. Internally the only feature visible is a circular depression 7m in diameter and 1m in depth in the western half; traces of what may have been a bridge spanning the ditch on the west side have also been reported (June 1979) The moat still contains water and was originally fed by a waterway running from an artificially constructed pond possibly of more recent origin 100.0m to the east, to a cut in the bank at the NE corner.

The site is located on the forested slope above the River Conon 1km to the east of Conan House. It is close to what, in the Medieval period, was a crossing of the River Conon. Here too was the old church of Logiebride (or Logie Wester), and the site of the Battle of Lagabraad in 1481. This area, at the “neck” of the Black Isle, will almost certainly have been a meeting point of routeways for centuries, if not millennia.

David’s Fort looking SW

A processed image of Davids Fort from a lidar survey (contains public sector information licensed under the Open Government Licence v3.0) © A Thompson. This model has also been uploaded to Sketchfab and can be seen in 3D at https://sketchfab.com/3d-models/davids-fort-d26cbff5d5184af18d157f7b6be94dad

Pictish Eagles and the Strathpeffer Stone

by John Wombell (NOSAS)

There are 12 known Pictish Eagle carvings, all in the RCAHMS publication of 2008 ‘The Pictish Symbol Stones of Scotland’.  They vary considerably and by far the best known and the best preserved is on the Clach an Tiompain at Strathpeffer (HER MHG43542) meaning the ‘sounding stone’ but known more widely as the Eagle Stone.

There are many images of it in circulation but a week ago I took a new set of photos which Alan Thompson kindly processed for me using photogrammetry (see images above and below, as well as on Sketchfab).  The reason behind this was that I wanted to try to produce an engraving of it on wood and needed to see more detail that is not visible to eye or touch at the stone.

The Eagle Stone has had several lumps bashed off it in the past removing part of the horse shoe symbol and the eagle’s rear end.  Otherwise damage to the carving is minimal with only part of the eagle’s leading leg either fallen or bashed off.

My dilemma was whether to give the eagle a tail or not.  I feel sure that unlike most Pictish eagles this one was drawn from a live eagle depicted walking.  It is correct in a lot of detail even though the carving is full of symbolism.  I decided to give my version a short dipped tail represented as two feathers after one of the Orkney eagles.

A Newly Discovered Pictish Stone for Easter Ross

by Anne MacInnes

Photographs of all 4 faces of the Conan Pictish stone © HES.

Whilst on a walk close to Dingwall, I came across a site that struck me as being slightly mysterious, atmospheric and with an air of neglect about it. I was immediately fascinated, and started to try and find out more about it.

I established that it was an early religious site, privately owned, and asked the landowner if I could have permission to survey it. This granted, and because of the difficult access, I began to form a plan of just how to carry this out. A specific parking place for one car was established and the survey began.

I followed the methodology used by Susan Kruse at Kiltearn, where I had helped carry out the survey (see blog).

First of all, three of us, sectioned off the site using tapes and this enabled me to draw up plans marking all the visible stones. They were all numbered, and then surveyed and photographed in detail. Inscriptions were carefully copied on to the recording forms, which at times involved a lot of head scratching due to the worn stone. Moss was removed but not lichen as this could damage the stone. Linda helped me almost every day, with Meryl and Beth helping when they could.

The weather was kind in the winter months when this survey was done, and we were struck by the oasis of peace, emerging wildflowers and variety of birdlife with occasional visiting roe deer. A large area of ponticum and invasive sycamore was cleared with chainsaw by Terry Doe, with Linda, Kay, and myself dragging it offsite. Finally a group of nine NoSAS members planetabled the site and did levels to show the footings and platform of a chapel, and Meryl drew this up.

The survey revealed as well as the probable chapel footings, upright headstones in various shapes and sizes, lair markers, tabletombs, graveslabs, some lightly covered by moss.

Most of them looked like this, either blank or with initials carved at the top. All the stones were orientated with their carved faces towards the east.

One day, I was brushing off leaves from a graveslab sitting on the ground, not buried, when I  noticed a bit of carving that looked like a foot. Carefully removing a bit more, a leg was attached to this foot! I couldn’t believe what I was seeing, so much so that I went to do something else and ignored it. However on my return it was still there and more was revealed.

A Year of Highland Archaeology

by James McComas (NOSAS)

A Year of Highland Archaeology book cover, showing Tarradale Through Time excavation trench with the settings of a possible stone hut. The same trench yielded several rare antler tools.

NOSAS has just published A Year of Highland Archaeology: A Collection of the Projects and Activities of the North of Scotland Archaeological Society . This new book includes 10 articles which explore some of the diverse recent projects that we has been involved with. These range from large scale funded excavations through to group surveys and small scale research projects. They highlight Highland locations from the west to the east coast, from Speyside to Sutherland.

Projects featured include the lottery funded Tarradale Through Time Project, which in 2017 saw 6000 year old antler tools uncovered near Muir of Ord on the Black Isle.  These very rare finds included the remains of a harpoon point and two “T axes” left behind by hunter gatherers on the shores of the Beauly Firth. The T axes are two of only five examples so far known in the whole of Scotland. The trench where these were found also tantalisingly revealed the possible stone setting of a Mesolithic hut. Tarradale Through Time continues in Autumn 2019 with the excavation of potentially one of the largest barrow cemeteries in Scotland (further information at www.tarradalethroughtime.co.uk).

One of rare antler “T axes” found during Tarradale Through Time’s 2017 excavations.

Another chapter focuses on Torvean Hillfort, a neglected structure on the edge of Inverness. Torvean was perhaps constructed more than 2000 years ago, but it is today sadly under threat from persistent trail bike damage. A different chapter tells the much more positive story of how a collection of 400 historic maps relating to the Lovat Highland Estates, covering extensive areas west of Inverness, have now been scanned and made available online.

Map of Torvean Hillfort, Inverness showing destructive trail bike tracks

A different chapter still focuses on the NOSAS’s work with Scotland’s Rock Art Project. ScRAP aims to log as many as possible of the mysterious carved “cup marks” which appear on Scotland’s boulders and rock faces over a 5 year project. The precise date of these carvings, of which there are many good examples in the Highlands, is unknown but they are thought to have been mainly created in the Neolithic period around 6,000 to 4,000 years ago. Other archaeological locations explored in the book include Ormond Castle in Avoch, a prehistoric roundhouse landscape in Glen Urquhart, and Gruinard Island in Wester Ross.

3D Photogrammetry model of cup marked stone at Kinmylies, Inverness

Scotland’s Rock Art Project (ScRAP): An Update

by Alan Thompson (NOSAS)

Led by Dr Tertia Barnett, ScRAP is a five-year project which “aims to enhance understanding and knowledge of Scotland’s rock art through community co-production and research”.

NOSAS has been involved with the project since it began (see previous post), and members have tested and contributed to the design of the fieldwork during the pilot phase. For some time now we have been clear to make progress with the fieldwork, and as a result we are getting to know the prehistoric rock art in our area and beginning to appreciate its many different forms.

For our members, the attractions of rock art and of the ScRAP project are many, indoor and outdoor, group and individual. The challenge of making sense of the records in Canmore and the local HER; the challenge of finding the panels, known as well as new; fossicking (prospecting); cleaning and recording on site; examining the 3D models to confirm or amend our field observations; and getting a panel firmly and correctly on the record.

The process is now well established, and ScRAP has an excellent website at www.rockart.scot.

This blog post is an opportunity to present a few of the more interesting panels we have recorded to date, along with some personal observations.

Some Examples

When most people hear about ‘cup and ring boulders’ they think of the famous panels at Kilmartin – wide, flat outcrops of smooth rock onto which cups with multiple concentric rings have been carved. Few panels in our area are like this, but we will start first with one that is, at Easter Backlands of Roseisle.

Easter Backlands of Roseisle

This sandstone panel is both damaged and worn, but the rings around at least 9 and possibly 11 cups can be seen.  One cup has 3 concentric rings, and three others have two. Looking more closely the radial grooves which go out from some of the cups are also visible.

Easter Backlands of Roseisle

More typically in our area we find one or more simple cups generally on the highest point on rough (medium grained) schist boulders; for example Balnafoich 2.

Balnafoich 2

Balnafoich 2 is a large boulder of schist, 4.3 m by 3.0 m by 1.5 m high, with three well formed cups at its highest points. The panel is on an east facing slope, near to the confluence of the Rivers Nairn and Farnach (just visible in the background). It is one a group of four panels. A few meters away is Balnafoich 1 which is a flat slab of schist, flush with the ground. It boasts 25 cups and is quite different in character to its neighbour.