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Slieve Gullion

Slieve Gullion is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Slieve Gullion rather than just read about it. In short: Slieve Gullion (from Irish Sliabh gCuillinn, meaning 'hill of the steep slope' or Sliabh Cuilinn, "Culann's mountain") is a mountain in the south of County Armagh, Northern Ireland. The mountain is the heart of the Ring of Gullion and is the highest point in the county, with an elevation of 573 metres (1,880 ft).

Slieve Gullion — main illustration
Slieve Gullion — illustration

Key takeaways

  • Slieve Gullion belongs to earth science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Slieve Gullion to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Slieve Gullion from memory before moving on to harder problems.

Reference excerpt

Slieve Gullion (from Irish Sliabh gCuillinn, meaning 'hill of the steep slope' or Sliabh Cuilinn, "Culann's mountain") is a mountain in the south of County Armagh, Northern Ireland. The mountain is the heart of the Ring of Gullion and is the highest point in the county, with an elevation of 573 metres (1,880 ft). At the summit is a small lake and two ancient burial cairns, one of which is the highest surviving passage grave in Ireland. Slieve Gullion appears in Irish mythology, where it is associated with the Cailleach and the heroes Fionn mac Cumhaill and Cú Chulainn. It dominates the countryside around it, offering views as far away as County Antrim, Dublin Bay and County Wicklow on a clear day. Slieve Gullion Forest Park is on its eastern slope. Villages around Slieve Gullion include Meigh, Drumintee, Forkhill, Mullaghbawn and Lislea. The mountain gives its name to the surrounding countryside, and is the name of an electoral area within Newry, Mourne and Down District Council.

Geography

Slieve Gullion is a steep-sided mountain with a flat top and a height of 573 metres (1,880 ft). It is the eroded remains of a Paleocene volcanic complex. It is surrounded by a ring dike known as the Ring of Gullion, a designated Area of Outstanding Natural Beauty (AONB). Slieve Gullion has been shaped by glaciation and exhibits a classic 'crag and tail' glacial feature. The 'tail', made up of glacial deposits, points south, ending at Drumintee. The geological formation was the first ring dike to be mapped, although its significance was not understood until similar structures had been described from Scotland. The rocks of the area are complex and have featured in international geological debate since the 1950s. The site has attracted geologists from all over the world and featured in theories to explain the unusual rock relationships. Some of these theories have now become an accepted part of geological science. Much of Slieve Gullion is covered with forest, heather, or raw stone, while 612 hectares of dry heath on the mountain has been designated a Special Area of Conservation, an Environmentally Sensitive Area, and an Area of Outstanding Natural Beauty. In July 2006, some areas of gorse were destroyed by a wildfire which may have been started deliberately. Traces of fields on the mountain's poor soil from farming in earlier times can still be seen. There is also evidence of past quarrying.

History

Burial cairns

There are two burial cairns on top of the hill, on either side of a small lake. The southern one is a large passage tomb, the highest surviving passage tomb in Ireland. In 1961, a team of archaeologists explored the site and set up a 30-person camp near the summit. The tomb's cairn is 30 m (98 ft) wide and 5 m (16 ft) high. The chamber inside is 3.6 m (12 ft) wide, with a corbelled roof up to 4.3 m (14 ft) high. It contained three large blocks of stone seemingly used as basins, and fragments of human bone. Some bits of worked flint and a barbed-end arrowhead were also found, "the meager remnants that survived the centuries of tomb raiding". The entrance is aligned with the setting sun on the winter solstice. Radiocarbon dating suggests it was built c.3500–2900 BCE. The smaller cairn to the north of the lake was built later, perhaps during the early Bronze Age (around 2000 BC). It contains two cist burials, with one containing bits of burnt bone; likely the remains of a single adult. The two cairns were disturbed by American soldiers training there during World War II. Irish folklore holds that it is bad luck to damage or disrespect such tombs and that doing so could bring a curse. Today they are historic monuments protected by law. In recent years, volunteers have helped to repair the burial cairns under the supervision of an archaeologist.

Titus Oates Plot Around 1680, religious persecution of local Irish Catholics heated up in reaction to Titus Oates' claims of a non-existent Catholic conspiracy aimed at assassinating King Charles II of England and massacring the Protestants of the British Isles. As a result, a Catholic priest named Fr. Mac Aidghalle was murdered while saying mass at a mass rock that still stands atop Slieve Gullion. The perpetrators were a company of redcoats under the command of a priest hunter named Turner. Redmond O'Hanlon, the outlawed but de facto Chief of the Name of Clan O'Hanlon and leading local rapparee, is said in local oral tradition to have avenged the murdered priest and in so doing to have sealed his own fate.

Hillwalking Slieve Gullion is popular with hillwalkers, with about 20,000 people climbing the hill every year. A road leads to a small car park about halfway up the western side of the mountain. From there a trail leads to the summit. There is also a waymarked trail from the northern side of the mountain. As there is no security on the mountainside, cars parked there are often broken into by thieves, and police have asked visitors not to leave valuables in cars. On the eastern side of the mountain is Slieve Gullion Forest Park, which includes a visitors' centre, café, playground, and the Giant's Lair Story Trail.

Mythology Slieve Gullion appears in Irish mythology.

Fionn and the Cailleach In the tale known as The Hunt of Slieve Gullion, Áine and her sister Milucra both seek after the legendary hero Fionn mac Cumhaill (Finn McCool). Knowing that Áine vowed never to marry a man with grey hair, Milucra secretly puts a spell on the lake atop Slieve Gullion, so that anyone who swam in it would become elderly. She tricks Fionn by asking him to fetch her golden ring from the lake, and he emerges as an old man with grey-white hair. His men, the Fianna, force her to give him a restorative potion from her cornucopia. Fionn's youth returns, but his hair does not return to its true colour. This is said to be the origin of his name, Fionn, meaning 'white'. In some versions of the tale, Milucra is revealed to be the Cailleach Bhéara (Calliagh Birra), an ancient goddess. The names of several features on the mountain refer to the Cailleach Bhéara. The passage grave is known locally as Calliagh Birra's House and the small lake is called Calliagh Birra's Lough. Lower down, on a hillock called Spellick, is a rock feature called the Calliagh Birra's Chair. Locals would visit it at Lughnasadh and take turns sitting on the chair.

… excerpt ends here. Continue reading the full article.

Illustrations

Slieve Gullion illustration
Slieve Gullion: The western slope; the lowlands between Mullaghbane and Lislea and in the background The Ring of Gullion (Slievenacapple)
The western slope; the lowlands between Mullaghbane and Lislea and in the background The Ring of Gullion (Slievenacapple)
Slieve Gullion: The entrance to the passage tomb
The entrance to the passage tomb
Slieve Gullion: Slieve Gullion at dusk from the west
Slieve Gullion at dusk from the west
Slieve Gullion: 360 deg panorama of Ireland over Slieve Gullion
360 deg panorama of Ireland over Slieve Gullion

Worked examples

Example 1 — a first encounter with Slieve Gullion

Start with the simplest possible case. Write down what Slieve Gullion claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Slieve Gullion before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Slieve Gullion ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Slieve Gullion

In research
Slieve Gullion appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Slieve Gullion in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Slieve Gullion is common in secondary-school and first-year university syllabi. It links to neighbouring topics Areas of Special Scientific Interest in County Armagh, Complex volcanoes, Extinct volcanoes of Europe, so understanding it makes those chapters shorter.
In everyday life
Look for Slieve Gullion outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Slieve Gullion in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Slieve Gullion means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Slieve Gullion out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Slieve Gullion in simple terms?

Slieve Gullion (from Irish Sliabh gCuillinn, meaning 'hill of the steep slope' or Sliabh Cuilinn, "Culann's mountain") is a mountain in the south of County Armagh, Northern Ireland. The mountain is the heart of the Ring of Gullion and is the highest point in the county, with an elevation of 573 met…

Why does Slieve Gullion matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Slieve Gullion?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Slieve Gullion.

Tags

  • Areas of Special Scientific Interest in County Armagh
  • Complex volcanoes
  • Extinct volcanoes of Europe
  • Highest points of Irish counties
  • Landscape
  • Mass rocks
  • Mountains and hills of County Armagh
  • Paleocene volcanoes
  • Places in Celtic mythology
  • Volcanic plugs of Northern Ireland

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