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Digging Tlachtga: Getting into the trenches with Ireland's past

Archaeologist Neil Jackman with part two of his three-part series on the momentous dig on the ancient site of Tlachtga in Meath.

Health and Safety Inspectors investigate our spoilheap (pic by Cathy Moore) Health and safety inspectors investigate our spoilheap at Tlachtga ;) Cathy Moore Cathy Moore

HAVE YOU EVER wondered about how archaeologists discover the story of the past? In the second of three articles in an exclusive series for TheJournal.ie, archaeologist Neil Jackman will take you behind the scenes of the exciting excavations at Tlachtga (The Hill of Ward) in Co Meath.

A team of volunteer archaeologists led by Dr Stephen Davis from UCD and site director Caitríona Moore, are attempting to discover the story behind one of Ireland’s most enigmatic sites.

In this, the second of the three pieces, Neil gives an update into the excavations so far (for an overview of the history of Tlachtga and the background to the project please see the first article here).

Investigating the ditch in Trench 1 Investigating the ditch in Trench 1. Neil Jackman Neil Jackman

We are now 11 days into the excavation, and the three test trenches are nearing completion.

The trenches were placed into features identified using LiDAR (a form of aerial survey that uses lasers to accurately record contours in the ground surface) and geophysics. Each of the trenches had its own role to establish the story of the site.

Trench 1 was placed over a bank and ditch of the existing visible monument. Trench 2 targeted a ditch that was identified during the geophysical survey. Trench 3 at the southern end of the site also targeted a ditch identified during the geophysical survey. All the trenches have been laboriously excavated by hand, using spades, shovels, mattocks and trowels.

The excavation of Trench 1 at the northern end of the visible monument, revealed that the ditch was cut through the bedrock that underlies the site. The ditch was revealed to be quite shallow and it contained a rather sterile fill of stony soil. The bank that was located to the outside of the ditch, was made largely of earth with stone and a further ditch was located just to the north of the bank.

This ditch was found to be very wide (around 5m) but quite shallow with a depth of less than 1m from ground surface. Small fragments of charcoal and burnt bone found within the lower layers of the material that accumulated within the ditch, will allow us to obtain radiocarbon dates to establish what period the ditch belongs to, and how it fits in with the rest of the site.

Trench 2 is located to the west of the visible monument. This trench targeted a ditch that was part of a very large three-ditched enclosure that measures some 190 metres in diameter.

The large ditch in Trench 2 cut into the bedrock The large ditch in Trench 2 cut into the bedrock. Neil Jackman Neil Jackman

The geophysical survey revealed that this enormous enclosure runs underneath the visible monument, suggesting that it predates the monument as we know it. This ditch is just under 3m in width, and measures around 1.5m deep, and it is very similar in appearance to the great ditch of Rath na Ríg on the Hill of Tara. Again the ditch was cut through the limestone bedrock.

When you consider the sheer size of this enclosure (it has a rough circumference of approximately 1500m), and that it is unlikely that metal tools were used, it suggests an absolutely jaw-dropping amount of labour was needed to create it.

We don’t know for certain at the moment how the people who created this massive ditched enclosure managed to dig through the calp limestone and shale bedrock without the aid of metal tools. One of our theories is that they used a practice known as ‘fire-setting’, where large fires would be lit directly on top of the stone. When the fire is at its hottest, water is thrown over it, causing the stone to fracture and split.

The earthworks showing banks and ditches of the visible monument The earthworks showing banks and ditches of the visible monument. Neil Jackman Neil Jackman

This technique was used during the Bronze Age at copper mines like Mount Gabriel in County Cork. Whatever technique was used, it was undoubtedly a laborious and time-consuming effort.

The material that filled the ditch in Trench 2 consisted of fractured stone and rubble with soil. Possibly material that formed a bank that once surrounded this ditch. Perhaps when this enclosure had fallen out of use, these banks were pushed into the ditch to backfill it, as the new monument was constructed.

The ditch fill had an amount of animal bone [primarily pig bone] within it, so we will be able to obtain a radiocarbon date that tells us  when the ditch was created. The presence of significant amounts of pig bone above other species in this ditch fill is interesting, as the consumption of pig is thought to have been related to high-status ceremonial feasting. This perhaps supports the idea of Tlachtga being a site of seasonal ceremonies – though I must stress it is still in the very early stages to be making any assumptions.

Investigating trench 3 Investigating trench 3. Neil Jackman Neil Jackman

Trench 3 also identified a ditch, though it is much smaller in width and depth than that of Trench 2. This trench has produced our largest amount of charcoal, animal bone and even a large piece of antler – though it appears to be unworked, the antler is a very interesting discovery. Overall other than the animal bone and antler we haven’t discovered many artefacts thus far.

However the main aim of this season’s excavation was to retrieve material that can be radiocarbon dated to tell us about the history and chronology of this wonderful enigmatic site. Our excavation for this season comes to an end this week, and we will backfill all the trenches and replace the sod to leave as little trace of the investigations as possible. We hope that following the analysis of our excavations, that we will have answered some questions about Tlachtga, and that we will return again next year to conduct further investigations.

A tour group visiting the site A tour group visiting the site. Neil Jackman Neil Jackman

The excavations are possible thanks to the efforts of Dr Stephen Davis, Site Director Caitríona Moore and the extremely hard work of the dedicated team of volunteer archaeologists who have endured through all the unpredictability of the Irish weather.

We are also extremely grateful to Senator John Gilroy, Joe Conlon, Meath County Manager Jackie Maguire, Deputy Ray Butler TD and Minister Brian Hayes, and the funding provided by The Office of Public Works, Meath County Council, The Heritage Council and The Royal Irish Academy.

The excavations aim to provide information to help to raise awareness of this truly remarkable archaeological site. The site is fully-staffed with experienced archaeological volunteers, though those with an interest in the site, or for those who would like to see how archaeology works, are more than welcome to visit during the excavations.

You can see daily updates, images and behind the scenes videos of the excavation on our dedicated Facebook Page, there is also a live Twitter feed using hashtag #TlachtgaDig

Dig this: How we plan to get to heart of one of Ireland’s most mysterious sites>

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7 Comments
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    Mute dogg
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    Feb 3rd 2014, 5:32 PM

    A good kick up the arse would sort most of those little thugs out

    109
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    Mute ipsum oleum
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    Feb 3rd 2014, 6:26 PM

    The late great Jim ‘Lugs’ Branigan proved that beyond doubt.

    32
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    Mute Paul Corrigan
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    Feb 3rd 2014, 6:48 PM

    A good kick up the arse might sort out some kid who’s trampled on your daffodils or knocked his bike against your car.
    The thugs out there today need to be met blow for blow, zero tolerance American cop style is the only way to go.

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    Mute Brian Stewart
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    Feb 3rd 2014, 6:50 PM

    If that’s the case how come we still have the problem

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    Mute Brian Stewart
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    Feb 3rd 2014, 6:55 PM

    That’s what
    Keeps the problem going

    5
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    Mute ipsum oleum
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    Feb 3rd 2014, 7:28 PM

    Jim is no longer with us and the do-gooders prevented his excellent work being continued. But Jim also gave lots of people self-respect by teaching kids how to box and the training gave them self-discipline plus he dealt with a few chaps who were neglecting their families by having a quiet word with them and helping them to get jobs. Up there with Willie Birmingham for his unsung social efforts.

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    Mute Paul Corrigan
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    Feb 3rd 2014, 5:37 PM

    I’m just after getting off the redline LUAS and feel pretty despondent about the future of youth crime

    74
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    Mute Leslie Alan Rock
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    Feb 3rd 2014, 5:53 PM

    Here’s an idea. Stop cutting funding to local youth groups and community projects. Theres your f****** answer

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    Mute Michael
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    Feb 3rd 2014, 7:38 PM

    You understand that “funding” means “taxes” on an already over-taxed people (the middle class).

    Why don’t you give your resources to these places and do your fair share rather than looking for someone else to solve the problem? Isn’t that a better solution?

    15
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    Mute Leslie Alan Rock
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    Feb 3rd 2014, 8:07 PM

    I did michael if you must know. But what good did it do. Nothing because central funding was pulled. Now they’re wasting money coming up with ideas. Vicious stupid circle

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    Mute gerryb
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    Feb 3rd 2014, 5:56 PM

    I particularly love the white socks and tracksuits tucked..uneducated pond life!a good tazer would sort a lot of them out!

    33
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    Mute Paul Corrigan
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    Feb 3rd 2014, 7:07 PM

    Or when they have their paws down their grey trackys scratching their nuts, such graceful young men

    25
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    Mute Steve
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    Feb 3rd 2014, 5:37 PM

    I completely misread the headline as ‘Govt unveils plan to tackle youth unemployment’. #WishfulThinking

    32
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    Mute Ben Frank
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    Feb 3rd 2014, 6:14 PM

    This the funniest thing I have read all day. The young criminals will also get a laugh out of this because they know are criminal justice system is the weakest in the western world.

    28
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    Mute ipsum oleum
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    Feb 3rd 2014, 6:10 PM

    Put them to work writing reports, Ireland’s only growth industry.

    26
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    Mute Sam Rockwell
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    Feb 3rd 2014, 5:59 PM

    How about trying investing for a properly resourced education system? Early intervention rather than a 30:1 pupil/teacher ratio oftentimes in prefabs yields results not just for problems like this. The correlation between early school leaving and involvement in crime has been proven time and again.
    But headline-grabbing lazy journalism doesn’t pay too much attention to stats like these.

    24
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    Mute Michael
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    Feb 3rd 2014, 5:35 PM

    Give youths a chance by lowering the minimum wage and letting unskilled workers compete and start their own business.

    Otherwise they steal and deal to get by.

    Joblessness and crime go hand in hand.

    Give the non-unionised skilled workers a chance, PLEASE.

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    Mute Michael
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    Feb 3rd 2014, 5:36 PM

    *skilled and unskilled

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    Mute dogg
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    Feb 3rd 2014, 5:36 PM

    Michael, you sir are an idiot!!!

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    Mute Michael
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    Feb 3rd 2014, 5:43 PM

    Oh that’s great logic. Congratulations on such a fine rebuttal and debate. Glad you are coming up with solutions

    18
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    Mute Leslie Alan Rock
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    Feb 3rd 2014, 5:54 PM

    So everyone without a job is a criminal? Oooooookay

    22
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    Mute Michael
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    Feb 3rd 2014, 5:57 PM

    Did I say that?

    Keep beating that strawman

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    Mute dogg
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    Feb 4th 2014, 2:15 AM

    Yes, let unskilled people start businesses. Please just explain how in God’s name that could work??? No skills means that they don’t know how to run a business, hence failing and having a massive debt of starting a business over their head.

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    Mute Michael
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    Feb 4th 2014, 3:22 AM

    What about selling something that people need? There is a need for low skilled jobs again like working in petrol stations (when is the last time you weren’t served by yourself?)

    Why would you not let the poor work? Do you want social Darwinism?

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    Mute Roy Scott
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    Feb 3rd 2014, 5:34 PM

    Ah yes the ol hoodi no crime without it, won’t want to be heading to the gym in one of them. Must get me suit out , oh wait , they will think I am in court !!! STEROTYPING!

    21
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    Mute Ciaran Morgan
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    Feb 3rd 2014, 6:08 PM

    Pay Rudy Giuliani to sort out teen crime.

    19
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    Mute Malcolm
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    Feb 3rd 2014, 7:02 PM

    When there is parental issues the apple wont fall far from the tree. You wont see shatter or enda’s kids getting asbo’s

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    Mute Martin Ryan
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    Feb 3rd 2014, 7:58 PM

    No they’ll just be very good at telling lies.

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    Mute Terry McSweeney
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    Feb 3rd 2014, 9:21 PM

    People brake the law, get caught and walk free.they don’t care because they know they face little or no punishment. Start punishing criminals properly and you have a chance of reducing crime. Investment in the prison system is what is needed.

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    Mute John Doe
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    Feb 3rd 2014, 9:52 PM

    If you want to tackle crime then get some jobs for the youth instead of trying to pawn them off as slave labour to multinationals with your jobs bridge scheme

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