Aoibheann Lambe

Rock Art and Winter Light at Derrynablaha

Rock art can be astounding or underwhelming. What makes it one or the other is light.

This is the rock I labelled Derrynablaha 3. My 1973 drawing of it is below. From it, there’s a clear view across to Lough Brin to the east, and all the way down the Kealduff River.

Irish prehistoric rock art likely dates from the Neolithic, about 5,000 years ago. We’ve written extensively about rock art (and indeed about Derrynablaha) – see all our posts on this special menu page. There are significant concentrations in Kerry, including 49 pieces identified so far in the adjoining townlands of Derrynablaha and Derreeny, in the middle of the Iveragh Peninsula. To get there, turn north from the Blackwater Bridge and head for the Ballaghbeama Gap.

If you go on a grey day with no shadows (all too common in our part of the world), or even when the sun is high in the heavens, you might see nothing at all. You might walk right by a piece of rock art without realising it was there. We visited Derrynablaha this week and were very lucky to hit it just right.

By ‘just right’ I mean that we had a sunny day, not a cloud to be seen, and because it’s winter and we got there earlyish in the morning the sun was low in the sky. That kind of low, raking light creates the best possible natural conditions for viewing rock art, as demonstrated in this post – Aoibheann Lambe’s excellent capture shows how to do it. There are other ways to do it, of course – you can use strategically placed coordinated flashes – something Ken Williams is rightly famous for. You can go at night with strong lights, or you can use photogrammetry to produce a 3D image. But for a truly immersive experience, seeing it on a day like we had is an experience that is hard to beat.

I spent time recording all the known Derrynablaha rock art when I was doing my thesis in archaeology at UCC in 1972. The carvings had been discovered by the landowner, Daniel O’Sullivan, who wrote to the Department of Archaeology in 1962. His brother, John, still lived on the farm when I was doing my fieldwork, in the farmhouse that is now a ruin (above) but which still holds happy memories for me. The remains of a more ancient settlement are also clearly visible (below).

They were visited by the Italian archaeologist Emmanuel Anati the following year, 1963, at Prof O’Kelly’s suggestion and it was Anati who first wrote about this site. Anati, by the way, went on to found a centre for rock art research at Val Camonica in Italy, and as far as I can tell is still alive and active, in his 90s. He recorded 15 panels.

This is my Derrynablaha 4

Subsequent expeditions from UCC, and my own explorations, resulted in a grand total of 23 examples being included in my thesis. By the time of the Kerry Archaeological survey in the 1980s there were 26 pieces identified, and more have been found since then – there are now 29 known panels of rock art in Derrynablaha and a further 20 in Derreeny.

A detail from Derrynablaha 4 clearly showing individual pick marks. The decoration was picked on using stone-on-stone percussion. You can also see how ice can settle on the surface and over time cause cracking damage. My drawing of this stone is below

They are very hard to find unless you know exactly where to go, and I was very lucky indeed to have the expert guidance of Google. Yes – there is a Google Map devoted to Irish rock art! It’s the brainchild of Caimin O’Brien of the National Monuments Service and with it on your phone it’s possible to tramp over the hillsides and locate each piece. We are supremely grateful to Caimin for the work he has done on this, and we only wish all National Monuments could get the same treatment!

Even with this amazing resource, this is not an easy field trip. The ground is steep, rough and wet, and there are barbed wire fences to find a way around. It’s an active sheep pasture, so it’s important to be mindful that you are on private property and be respectful of all farm boundaries. 

This is a good example of rock art that could be easily overlooked. A very faint cup-and-ring can be seen in good light conditions. The obvious hole, however, is not a cupmark but a naturally occurring solution pit

Because we only had half a day, we confined our walk to the area around the old farmhouse and the hillside to the west of it, and managed to visit 8 panels. Even in the perfect lighting conditions we had, not all are easy to see, as they have been exposed for thousands of years and have worn away. But, for the most part, once we had found the rock, we could see the carvings clearly. 

All the panels we viewed had cupmarks and cup-and-ring marks, as well as some pecked lines meandering across the surface. We don’t know what the significance of these motifs are, although theories abound. There are other motifs at Derrynablaha too, all falling within the repertoire of classic rock art. 

Our companions on this day, as on so many of our adventures, were Amanda and Peter of Holy Wells of Cork and Kerry. And of course several holy wells were on the agenda too, including this one near Kenmare. Take a look at Amanda’s brief write up on her Facebook page, or keep an eye on her excellent blog for more about our finds on this trip.

We’ve written about Derrynablaha so many times now – why do I know this won’t be the last time?

Cashels in Kerry 3: Loher

I had the opportunity to visit Loher Fort in Kerry recently, so I have decided to expand this Cashels in Kerry series to four and I’m including it in the list. I’m leaving Staigue till last.

Loher Fort was excavated for four seasons in the 1980s by an archaeologist from UCC. Yes, that’s right, four seasons! You might reasonably expect, therefore that this would be the fort that would yield a thick report full of details and illustrations of what was found, some radiocarbon dates, some historical context – but shockingly, the only report ever forthcoming was a few paragraphs provided to Excavations.ie. I quote it in full now.

The fourth season of excavation was completed during 1985. The site may be classed as a cashel, 20m in internal diameter, with rampart walls, 2m thick.

Prior to excavation the interior of the site was composed of stone fill to a depth of 2m. On removing this fill, 2 stone structures were uncovered. Both of these had walls surviving to a height of 1m and 1m in thickness. One structure is circular (clochan type) and the other rectangular. The circular structure is c. 5m in diameter and the rectangular structure is 7m x 6m in extent.

The interiors of both these structures have been excavated. This revealed no great depth of occupation deposit but did reveal a good stratigraphic sequence of structures. Essentially, there are 5 identifiable structures including the above two. In the area of the surviving circular structure, an earlier stone-built circular structure was uncovered. This was pre-dated by a wooden structure constructed of driven stakes.

The rectangular structure was pre-dated by a circular wooden house, again of driven stakes. There is also the possibility of another post-built structure in this area. Apart from the above mentioned stratigraphic relationships, the latest circular structure pre-dates the rectangular stone structure. Other features include a souterrain associated with the circular house, and a parapet walkway and mural steps.

Finds include glass beads and a tanged knife. Organic material includes shell, carbonised seed remains, fish scales and fish bones.

https://excavations.ie/report/1985/Kerry/0000602/

That’s it – that’s all we know, apart from a very broad assigned date in the overview of Medieval (AD 400-AD 1600). 

Interestingly archaeologist Aoibheann Lambe, the rock art expert, has identified a number of pieces of rock art in an around the fort, including on stones used as building materials. While these pre-date for fort by several thousand years, it is evidence that people were living in this area for millennia. It’s easy to see why – it’s a spectacular setting, with access to the sea and a location that provides a strategic point of domination over the surrounding landscape.

As at Leacanabuaile, there was also a souterrain, although there is no indication on the ground now of where it was, and we have no record of what it looked like and no plan. It was under the round house, which is the earlier of the two houses. Here’s what the National Monuments records says about that:

The entrance to a souterrain is located in the W half of the interior of the house. Measuring 1.1m x 1.3m, it gives access to a drystone-built lintelled passage, 1m high, which runs E-W for 3m before turning sharply to N. The excavation revealed that the construction of the souterrain post-dated that of the house, and that an earlier stone-built circular structure in the area of the house was, in turn, pre-dated by a wooden structure constructed of driven stakes.*

What is a souterrain exactly? As the name suggests, it’s a man-made underground passage, often associated with ringforts and cashels. They may have had a variety of uses, but perhaps the main one was as a root cellar to preserve food. That’s me, above emerging from one of the most famous of of our Irish souterrains, Oweynagat at Rathcroghan. They’re a common class of archaeological monument – there are over 1,000 in Cork and over 800 in Kerry. Folklore is rich with stories of souterrains that stretch for miles, that end up in the sea or in a nearby castle, but alas although we know of complex examples with passages leading to multiple chambers, most are quite short and contained within the general area of the ringfort. For more on souterrains, see this wonderful site. 

There was also a covered drain leading from the fort entrance to the house, and another between the two houses. Not quite the fine paving that was found at Cahergal, but certainly a way of keeping your feet dry on what were no doubt well-worn paths. There’s no mention of this in the brief report, but obviously the OPW, who conducted the reconstruction, knew about this, as did National Monuments who commissioned the interpretive plaque. Is there, in fact, more information available somewhere? I would be happy to stand corrected.

The walls and stone steps, which are a standout feature of these Kerry Cashels, are described in the National Monuments record. Note they use the word Caher instead of Cashel – both mean ‘stone fort.’

Caher Wall: This consists of a rubble core faced internally and externally with random courses of well-built drystone masonry. Much of the external face, which is battered, is concealed by a substantial build-up of collapse and field-clearance material. The wall, which is up to 4m in basal thickness, varies in external height from 1m to 2.5m and internally from 2.5m to 3.3m. A lintel-covered paved entrance passage. . . leads into the interior of the site from SSE. A terrace, reached by means of seven inset arrangements of opposing steps, occurs on the internal face of the caher wall at an average height of 1.3m. The arrangements of steps occur at irregularly spaced intervals, and the individual sections of the terrace to which they give access average .6m wide. Traces of a short section of a second terrace, also furnished with steps, occur above the first in the N sector of the wall.*

Because we have no access to a proper excavation report, we don’t know how closely the reconstruction efforts at Loher were based on the findings. However, from the little information we have it seems that what we see now on the ground is a reflection of what was left after multiple periods of occupation, one of which (perhaps the earliest phase) included a house built with wooden stakes. 

Like Leacanabuaile and Cahergal, it seems that once the excavation is over, the OPW moves in and ensures that what is left, if it is to be open to the public is made safe for visitors. If that was all they did, we might all, perhaps, be a little less confused now about what these forts looked like originally. But the instinct to reconstruct is strong, as well as the perceived need to tidy up the place, round off sharp corners and keep the grass trimmed to golf course standards. The information plaques the National Monuments folk provide are exceptionally well designed and full of welcome information.

What we can say is that it’s a wonderful site, impressively built and situated, and adds to the sum total of what knowledge we have of how high-status individuals constructed statement dwellings or ceremonial spaces for themselves in medieval Ireland. 

  • The description is taken from the online inventory maintained by National Monument for all archaeology sites in Ireland, available to search here:

All four posts in this series can be found here.

Exploring Ancient Drowned Landscapes

‘Drowned Landscapes’ – that’s an adequate enough description for us to look again at a subject which RWJ covered five years ago in this post: Tralong Bay, Co Cork – give it a read. I was reminded of the subject when we took part in an Archaeology Festival based in West Kerry just a week ago: Amanda’s current holy well blog describes the expeditions. One of the sites visited was Bunaneer Drowned Forest, where we saw stumps of trees on the beach there which were alive thousands of years ago. At low tide many tree remains become visible at Bunaneer, near Castlecove village on the south coast of Kerry’s Iveragh Peninsula. Our guides for this expedition were plant biologist Calum Sweeney and archaeologist Aoibheann Lambe.

This large jumble of roots (above) is known as Goliath. All the remains here can be seen at regular low tides: at other similar sites elsewhere in Ireland, remains of ancient tree boles and roots are only revealed when tides are exceptionally low. I find it remarkable to be able to see and readily touch these archaic pieces of timber: we are communing with distant history!

Carbon dating has shown that these remains were alive between three and a half and five millennia ago. This is evidence that sea levels were significantly lower then, and that the shore line was further out – perhaps 50 metres from where we see it today. We are constantly – and quite rightly – being warned about rising sea levels resulting from our changing climate in the long term: here we see clear verification that it’s a continuing – and now apparently accelerating – process.

Our friends Robin and Sue Lewando were also on this expedition. Robin has a particular interest in sea-level changes in the Late Quaternary and subsequent eras, and he pointed me to a 2015 paper which explores the subject specifically in the Bantry Bay area of West Cork. That’s a good place to be looking at ancient history: remember the story of Cessair – Noah’s daughter-in-law – who came ashore at Donemark? You first read about it here! So this is a scientific diagram which sets out how sea-levels have been changing over time in our locality:

It’s an interesting comparison to take our horizons wider in our study of changing sea levels across the islands of Ireland. Over on the east coast – north of Bray, Co Wicklow – there is another substantial area where tree remains have been revealed at certain tidal conditions.

Above are the areas of beach between Bray and Killiney where ‘drowned forest’ remains have been observed. While at Youghal, Co Cork, further finds have occured:

This example catches our interest because the name of the settlement – Youghal – is derived from the Irish word ‘Eochaill’ meaning ‘Yew Woods’: they were evidently once common in the area, leading us to wonder whether the tree remains in this instance are of yew. In 2014 the following account of another ‘ancient drowned forest’ discovery appeared in the Irish Times (photograph courtesy of Joe O’Shaughnessy):

. . . Walking out on to the shoreline at low tide, geologist Prof Mike Williams points to the oak, pine and birch stumps and extensive root systems which were once part of woodlands populated by people, wolves and bears. These woodlands extended out into lagoons and marshlands that pre-dated the formation of Galway bay, Prof Williams says.

An extensive layer of peat also exposed at low tide in the same location in Spiddal was formed by organic debris which once carpeted the forest floor. The stumps at Spiddal are surrounded by root systems which are largely undisturbed. The carpet of peat is covered in strands of a reed called phragmites, which can tolerate semi- saline or brackish conditions.

“These trees are in their original growth position and hadn’t keeled over, which would suggest that they died quite quickly, perhaps in a quite rapid sea level rise,” Prof Williams adds. Up until 5,000 years ago Ireland experienced a series of rapid sea level rises, he says. During the mid-Holocene period, oak and pine forests were flooded along the western seaboard and recycled into peat deposits of up to two metres thick, which were then covered by sand.

Prof Williams estimates that sea level would have been at least five metres lower than present when the forests thrived, and traces of marine shell 50cm below the peat surface suggest the forest floor was affected by very occasional extreme wave events such as storm surges or tsunamis. He says most west coast sand-dune systems date to a “levelling” off period in sea level change about 5,000 years ago. Dunes in Doolin, Co Clare, are older still, having first formed around 6,500 years ago.

Prof Williams has located tree stumps in south Mayo and Clare, along with Galway, which have been carbon dated to between 5,200 and 7,400 years ago at the chrono centre at Queen’s University, Belfast. Some of the trees were nearly 100 years old when they perished . . .

Lorna Siggins
Irish Times 07/03/2014

Goliath, West Kerry, November 2023

Rock Art and Red Socks

(Mizen Magic 26: Balteen)

What do red socks have to do with rock art?  Well, nothing really, but they turned out to be surprisingly useful this week.

It’s been ages since we talked about rock art, hasn’t it? Thinking about that, I decided to do some tidying up in our blog and I have created a special page for Rock Art, and another one for Mizen Magic, since this post also fits into the Mizen Magic series. 

Robert and I set off to hunt down rock art we haven’t yet seen on the Mizen. The National Monuments site contains two records for Cupmarked Stones in the townland of Balteen, and both proved easy to find. (If you can’t remember what a Cupmarked Stone is, take a look at this post before reading on.) The first is along the road that leads from Barley Cove to the North Side. That’s my butt marking the location of the rock, above.

It’s built into the bank and we might not have been as quick to spot it as we were unless somebody else had already found it and cleared away some of the overgrowth – I suspect Rock Art Kerry, AKA Aoibheann Lambe had been there before us, perhaps a couple of years ago. We usually remember to bring a soft brush with us for a gentle cleaning of the rock surface (lots of moss on this one) but we had forgotten this time. The red socks came to the rescue.

This is a lovely example of a cupmarked stone – although it’s possible there is more on it than cupmarks only. The central cupmark appears to have some carving around it that helps to mark it out and elevate it – not a complete circle but an arc that may end in an expanded finial. We have sent the photos off to UCC for a 3D rendering and this may clarify this aspect of the carving. Here’s a short video – see what you think about that arc.

Meanwhile, since it’s hard to make out what’s in the surface of a grey rock on a grey day, clever Robert has made a scaled drawing of it. We know that cupmarked stones like this can date anywhere from the Neolithic (about 5,000 years ago) up to the Bronze Age (ended about 2,500 years ago), and that the cupmarks were probably made by picking or bashing them out with a stone cobble, but we don’t know why they were done, or what meaning the cupmark itself may carry.

We also don’t know if this one is in its original position, but it’s likely that it is not. It is currently incorporated into the bank at the side of the road, leading us to suspect that it was found in the vicinity and built into the wall to give it a place where it would be visible to all passers-by.

The second one (above) was a surprise! First of all, it’s enormous! It looks like it may have been a capstone for a large structure, or perhaps a boulder burial. However, it’s difficult to determine if there is anything underneath and it may well be a glacial erratic that simply ended up here. This one is in the same townland but it’s on private property, so we are not pinpointing it on a map, at the request of the owners – but they are happy to give permission to see the stone and they welcomed us to take photos and tell them a little about rock art in general. There are nine cupmarks, from large to small and some appear to be arranged in a rough semi-circle – something we have observed on other cupmarked stones.

I am trying something a little new with this post – doing short videos to see if this helps to convey more than a photograph might. I’d be interested in your feedback on this. Note: You may have to play the videos on YouTube – sorry if this aspect isn’t working right for everyone!

Just when you think you have seen all the Mizen has to offer, it reveals yet more of its secrets!

Revealing Rock Art: 150 Years of Images

This week a powerful image from Ken Williams of Shadows and Stone (copyrighted, used with permission) lit up the Irish Rock Art Facebook Page (180,000 people had seen it at last count, and it’s been shared more than 1500 times). The photograph, taken with Ken’s signature blend of natural and artificial light, was of a stone in Kerry often known as the Staigue Bridge Rock Art, although technically it’s in the townland of Liss.

As it turns out, this is one of the best-documented rock art panels in Ireland, with images dating from the middle of the nineteenth century to the present day.

Taken on a recent visit to Liss/Staigue Bridge Rock Art site. This is probably what a casual visitor will see. Can you make out any carvings?

The response to this photograph highlights several important features of Irish rock art. First of all, it seems people are hungry to know more about these enigmatic carvings, and yet rock art is one of the least known aspects of Irish archaeology. Time after time, as Robert and I present exhibitions or give talks, we meet up with a near-universal response of “How come we’ve never heard about this before?”

Another view of the top section of the panel

Secondly, a photograph like this is not normally what you observe in the field. Commonly, rock art (and this one is no exception) is actually difficult to see under most lighting conditions. This rock is just off a popular hiking trail and the vast majority of walkers are unaware of what is a few meters from their path. Even if the route went right alongside it, most walkers would pass by without noticing anything unusual.

This will give you an idea of the extent of the panel

Thirdly, it is no longer possible to record rock art by any of the traditional methods that were in common use up to the 1990s. Nowadays, recording techniques that do not impact in any way with the rock surface are preferred, and that limits us to what can be imaged through photographic and scanning technology.

Aoibheann Lambe’s virtuoso photograph – this is the panel in the second photograph, taken from almost the same angle but under perfect natural lighting conditions. © Aoibheann Lambe

There are currently three ways in common use to photograph rock art so that the carvings will show up. The first is to use the natural low, slanting, shadow-casting, light at sunrise or sunset. Rock Art Kerry, the work of archaeologist Aoibheann Lambe, has an outstanding photograph of the rock surface using only natural light. Given our climate, it is likely that many visits to the rock in all kinds of temperatures, early in the morning or late in the evening, were necessary before the perfect shot was possible. Aoibheann’s Facebook page is the place to be these days for new finds – she is making discoveries at a breathtaking pace!

Another of Aoibheann’s photographs – this one shows the extent of lichen growth on the rock surface, which often functions to obscure carvings. © Aoibheann Lambe

The second is to use flash photography – a technique that Ken Williams has perfected and uses to great effect to show up even faint carvings. We’ve seen Ken working – this isn’t a mater of a simple flash on a camera – multiple flashes are deployed with a skill that comes from long experience, and respond to an electronic trigger on his camera.  If you haven’t already done so, a visit to his site is an absolute must for anyone interested in rock art – or indeed in Irish archaeology.

Finola and Robert from Roaringwater Journal and Ken Williams of Shadows and Stone at Derrynablaha in Kerry

The third technique is that of photogrammetry. In essence, this is the combination of multiple high resolution photographs to construct a 3D image of a rock surface. The Discovery Programme has been sponsoring 3D imaging of various national monuments, including Ogham Stones and Sheela-Na-Gigs, for some time. Under this program, The Dingle Museum (Músaem Chorca Dhuibhne) has produced a series of 3D images, including an excellent one of the Liss/Staigue Bridge rock art panel.

The top panel rendered in 3D – this is a screen capture. © Corca Dhuibhne 3D 2017

It is particularly exciting because it’s unusually clear (rock art 3D images can suffer from lack of clarity for a variety of reason) and also because this technique allows an image of the whole panel, whereas photography can only capture pieces at a time.

These stills have been captured from the 3D images on the Museum site but they do NOT compare with the experience of viewing and manipulating the 3D images on screen. It’s brilliant work, so please go to their page for the real thing. © Corca Dhuibhne 3D 2017

But back to the past, when it was still possible to produce drawings of the carvings. Back, in fact, to the 1850s! There were two Irish antiquarians called the Rev Graves. The better-known one was the Rev James Graves of Kilkenny, but the one we are concerned with here was the Rev Charles Graves, Bishop of Limerick and a noted mathematician, scholar, antiquarian, and President of the Royal Irish Academy. He was fascinated by Ogham and on a trip to view Ogham stones in Kerry he came across other ‘inscribed rocks’ of a type he was unfamiliar with. He wrote up his findings and presented them to the Academy in 1860.

Taken from the Wikipedia article on Charles Graves. Image above by Anonymous – Church Bells (1874–1875)) W. Wells Gardner, Publisher, London, Public Domain

The good Bishop had none of our modern scruples about interfering with the rock surface, or removing the turf to see what else he could fine. He did both: three feet of turf was stripped back to reveal the extent of the carvings and a rubbing was made from the whole surface, which was later converted to a survey-drawing. This, to this day, is the only drawing we have of the complete carving.

When I wrote my thesis on The Rock Art of Cork and Kerry in 1973 I said this about Charles Graves:

The first paper devoted to rock art in Ireland was by Rev. Charles Graves. In 1860 he read a paper to the Royal Irish Academy entitled “On a previously undescribed Class of Monuments”. His paper, mainly concerned with Co. Kerry, is still very valuable and his drawings and observations are often more accurate and more reliable than many later accounts.

My own drawing was done in 1972. The technique I used then was to chalk in the carvings and trace them onto clear plastic film. That tracing was then re-traced on to good quality paper using indian ink and a stipple technique and then photographically reduced by a professional printing firm. It is naturally an imperfect and subjective method, but long practice enabled me to produce surprisingly accurate renditions which stand up well to modern recording techniques.

I confined my drawing to the main area of carving and used Graves’ drawing as an additional illustration

There are few examples of Irish rock art with the pedigree of Staigue Bridge. It is classic cup-and-ring art in its execution but also contains the unusual elements of very large circles surrounding small cupmarks. It is enormous – a fact that would never have been appreciated if Graves had not determined to find the true extent of the carved surface (although of course we do NOT condone this practice now). It has a literature that goes back a century and a half, and was one of the first pieces of Irish rock art to be described and illustrated. It’s a national treasure.