Great Sugar Loaf

Great Sugar Loaf (Irish: Ó Cualann, meaning "lump of Cualu")[2] at 501 metres (1,644 ft), is the 404th–highest peak in Ireland on the Arderin scale,[3] however, being below 600 m it does not rank on the Vandeleur-Lynam or Hewitt scales.[4][5] The mountain is in the far northeastern section of the Wicklow Mountains, in Ireland, and overlooks the village of Kilmacanogue. The profile of the mountain means it can be mistaken for a dormant volcano. It owes its distinctive shape, however, to the erosion-resistant metamorphosed deep-sea sedimentary deposit from which its quartzite composition was derived.[6]

This article is about the hill in East Wicklow. For its smaller neighbour, see Little Sugar Loaf. For the similarly named hill in West Wicklow, see Sugarloaf (West Wicklow). For other mountains of the same name, see List of mountains named Sugarloaf.
Great Sugar Loaf
Ó Cualann
Great Sugar Loaf, from the south
Highest point
Elevation501 m (1,644 ft) [1]
Prominence216 m (709 ft) [1]
ListingMarilyn, Arderin
Coordinates53°9′18″N 6°9′0″W 
Naming
English translationlump of Cualu
Language of nameIrish
Geography
Great Sugar Loaf
Location in Ireland
LocationWicklow, Ireland
Parent rangeWicklow Mountains
OSI/OSNI gridO2377613088
Topo mapOSi Discovery 56
Geology
Mountain typeQuartzite bedrock[1]
Climbing
Easiest routeRed Lane car-park

Naming

According to Irish academic Paul Tempan, the term "sugarloaf" is widely applied to conical-shaped hills in Britain and Ireland, and is similar to the pain de sucre term used in France.[2] Tempan also notes that there is a misconception that the term relates to a kind of bread; however, it relates to the form in which sugar was sold up to the 19th-century before granulated sugar was available. Traditionally, a sugary liquid was dripped onto a surface until a solid mass formed in a conical shape, like a sugary stalagmite, called a sugarloaf. This form is still used in the German alcoholic drink, Feuerzangenbowle.[2]

Tempan notes that a 1935 article by Eoin MacNeill in the Journal of the Royal Society of Antiquaries of Ireland (JRSAI), on placenames mentioned in the Togail Bruidne Dá Derga, suggested that Irish: Ó Cualann could refer to "sheep of Cualu", but considered it unlikely.[2]

Geography

The Great Sugar Loaf overlooks villages of Kilmacanogue and Delgany, and is just north of the Glen of the Downs. The mountain sits apart from the main nearby peaks of the Wicklow Mountains, such as Maulin 570 metres (1,870 ft) and Djouce 725 metres (2,379 ft), and it is circled by roads on all sides.[7]

The two small northern and southern shoulders of the Great Sugar Loaf are often confused as being the Little Sugar Loaf, however, this mountain lies to the east on the other side of the N11 road motorway at Kilmacanogue.[7]

Though only 501 metres (1,644 ft) in elevation, the Great Sugar Loaf's isolation from other hills gives it a large proportional prominence of 216 metres (709 ft), and qualifies it as a Marilyn.[8] In addition, the steep slopes and volcanic appearance of the Great Sugar Loaf add to the distinctiveness of its profile.[7]

Geology

The Great Sugar Loaf is composed of Cambrian Period quartzite bedrock (called the Bray Head Formation), in contrast to the rounded Wicklow Mountains to the west, which are mostly made of Devonian Period granite. The Great Sugar Loaf is also popularly mistaken for a dormant volcano, however, it is instead an erosion-resistant metamorphosed sedimentary deposit from the deep sea.[6][9] Cambrian quartzite metamorphosed from sandstone at the bottom of deep oceans is extremely resistant to weathering.[6]

The Kilmanacoge valley, which the Great Sugar Loaf overlooks, was part of a regional north-south subglacial meltwater drainage route that included the Scalp (to the north) and the Glen of the Downs (to the southeast).[6]

Hill walking

The Great Sugar Loaf is popular with hill walkers given its proximity to Dublin, access from the N11 motorway, and relatively worn pathways that do not require full hiking boots or extensive navigation skills. In addition, the mountain also offers some mild scrambling up rocky gullies which adds to its appeal.[7]

The easiest route is from the south, starting from an established large car-park (O235119) situated off the middle of the Red Lane road (also known as the L1031 road) that runs along the southern boundary of the mountain; the car-park is already at an elevation of circa 290 metres (950 ft), and thus the total climbing elevation required is only 210 metres (690 ft). The 3.5-kilometre route from the car-park to the summit and back takes between 1–1.5 hours, and includes a walk over flat moorland paths and a final scrambling ascent through some rocky gullies.[7]

A longer route can be done from the east, starting from lower down at the Kilmacanogue GAA car-park (O233141); this 5-kilometre route from the car-park to the summit and back takes 2–2.5 hours, and is mostly on moorland paths with some scree and gravel sections.[7]

Bibliography
  • Fairbairn, Helen (2014). Dublin & Wicklow: A Walking Guide. Collins Press. ISBN 978-1848892019.
  • Fairbairn, Helen (2014). Ireland's Best Walks: A Walking Guide. Collins Press. ISBN 978-1848892118.
  • MountainViews Online Database (Simon Stewart) (2013). A Guide to Ireland's Mountain Summits: The Vandeleur-Lynams & the Arderins. Collins Books. ISBN 978-1-84889-164-7.
gollark: For the "boy and his atom" thing probably, I was confusing it with the "nanoputian".
gollark: You kind of can, for dubiously useful definitions of "life".
gollark: How do I make it synthesise "hello, world"?
gollark: As far as I know, not even E. Coli are close to fully understood.
gollark: Yes.

See also

References
  1. "Great Sugar Loaf". MountainViews Online Database. Retrieved 11 July 2019.
  2. Paul Tempan (February 2012). "Irish Hill and Mountain Names" (PDF). MountainViews.ie.
  3. Simon Stewart (October 2018). "Arderins: Irish mountains of 500+m with a prominence of 30m". MountainViews Online Database.
  4. Simon Stewart (October 2018). "Vandeleur-Lynams: Irish mountains of 600+m with a prominence of 15m". MountainViews Online Database.
  5. Mountainviews, (September 2013), "A Guide to Ireland's Mountain Summits: The Vandeleur-Lynams & the Arderins", Collins Books, Cork, ISBN 978-1-84889-164-7
  6. Sile Daly (May 2016). "The Great Sugar Loaf: Geological Context" (PDF). Irish Mountaineering Club. Retrieved 11 July 2019. Popularly mistaken for a volcano, its metamorphism has rendered the rock extremely erosion-resistant and the mountain owes its shape to the weathering characteristics of quartzite.
  7. Fairbairn, Helen (2014). Ireland's Best Walks: A Walking Guide. Collins Press. ISBN 978-1848892118. Route 57: Great Sugar Loaf
  8. Chris Cocker; Graham Jackson (2018). "The Database of British and Irish Hills". Database of British and Irish Hills.
  9. Michael Viney (1 November 1997). "Moving Mountains". Irish Times. Retrieved 11 July 2019. The peak of the Great Sugar Loaf was never a volcano, but started life as sand on the ocean floor.
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