Two Rock
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Two Rock (; archaic: Black Mountain; ' ()) is a mountain in Dún Laoghaire–Rathdown,
Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...
. It is high and is the 382nd highest mountain in Ireland. It is the highest point of the group of hills in the Dublin Mountains which comprises Two Rock, Three Rock,
Kilmashogue Kilmashogue or Kilmashoge () is a mountain in Dún Laoghaire–Rathdown county in Ireland. It is high and forms part of the group of hills in the Dublin Mountains which comprises Two Rock, Three Rock, Kilmashogue and Tibradden Mountains. The f ...
and
Tibradden Tibradden Mountain () is a mountain in County Dublin in Ireland. Other former names for the mountain include "Garrycastle" and "Kilmainham Begg" (a reference to Kilmainham Priory which once owned the lands around the mountain). It is high and i ...
Mountains. The mountain takes its name from the two
granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...
tors that lie to the south-east of the summit. From the summit, which is called Fairy Castle, there are views of much of the Dublin area from
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to
Howth Howth ( ; ; non, Hǫfuð) is an affluent peninsular village and outer suburb of Dublin, Ireland. The district as a whole occupies the greater part of the peninsula of Howth Head, which forms the northern boundary of Dublin Bay, and includes ...
to the north while
Bray Head Bray Head ( ga, Ceann Bhré) is a hill and headland located in northern County Wicklow, Ireland, between the towns of Bray and Greystones. It forms part of the Wicklow Mountains and is a popular spot with hillwalkers. At the top of the head i ...
,
Killiney Hill Killiney Hill ( ga, Cnoc Chill Iníon Léinín) is the southernmost of the two hills which form the southern boundary of Dublin Bay, the other being Dalkey Hill. These two hills form part of Killiney Hill Park. Crowned by a monument, Killiney Hi ...
, the Great Sugar Loaf and the
Wicklow Mountains The Wicklow Mountains (, archaic: ''Cualu'') form the largest continuous upland area in the Republic of Ireland. They occupy the whole centre of County Wicklow and stretch outside its borders into the counties of Dublin, Wexford and Carlow. ...
are visible to the south.Corlett, p. 19. The summit area is mostly shallow bog while
fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes exce ...
s and gorse cover the lower slopes. The mountain is also an important habitat for red grouse. A number of prehistoric monuments can be found on the mountain including a
passage tomb A passage grave or passage tomb consists of one or more burial chambers covered in earth or with stone, and having a narrow access passage made of large stones. These structures usually date from the Neolithic Age, and are found largely in Wester ...
on the summit and a
wedge tomb A gallery grave is a form of megalithic tomb built primarily during the Neolithic Age in Europe in which the main gallery of the tomb is entered without first passing through an antechamber or hallway. There are at least four major types of ga ...
on the slopes near Ballyedmonduff.


Points of interest


Fairy Castle

Fairy Castle, as the summit is known, is marked by a stone cairn and an
Ordnance Survey Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see ordnance and surveying), which was to map Scotland in the wake of the Jacobite rising of 1745. There was a ...
trig pillar.Fourwinds, p. 155. These both sit on top of a circular structure of
granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...
and
quartz Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical ...
blocks across and high and covered by turf and vegetation.Corlett, p. 109. This is the remains of a
passage tomb A passage grave or passage tomb consists of one or more burial chambers covered in earth or with stone, and having a narrow access passage made of large stones. These structures usually date from the Neolithic Age, and are found largely in Wester ...
, the easternmost of a series of such tombs that stretches across the Dublin and West Wicklow Mountains. The entrance to the tomb – once described by locals as a "cave" – can no longer be seen due to the collapse of the edges of the cairn. There is no evidence that the tomb has ever been opened but archaeologists believe that the interior contains a small burial chamber.


Ballyedmonduff wedge tomb

In an area of forest to the southeast of the summit, near Ballyedmonduff, at grid reference O 185 213, there is a
Bronze Age The Bronze Age is a historic period, lasting approximately from 3300 BC to 1200 BC, characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization. The Bronze Age is the second prin ...
wedge tomb A gallery grave is a form of megalithic tomb built primarily during the Neolithic Age in Europe in which the main gallery of the tomb is entered without first passing through an antechamber or hallway. There are at least four major types of ga ...
, known as the "Giant's Grave".Fourwinds, p. 81. It is considered one of the finest examples of a wedge tomb in Ireland:Corlett, p. 102. the antiquarian John O'Donovan said of it, "I doubt I have met so perfect a pagan grave in any other counties hitherto examined".Herity, p. 3. Its appearance has changed since the time of its first discovery: sketches made in the 1830s by the Ordnance Survey show a grass-covered
tumulus A tumulus (plural tumuli) is a mound of earth and stones raised over a grave or graves. Tumuli are also known as barrows, burial mounds or ''kurgans'', and may be found throughout much of the world. A cairn, which is a mound of stones bu ...
.Fourwinds, p. 16. A drawing by George Du Noyer indicates that the roof was partially intact at that time. In addition, the pine forest that now surrounds the site obscures the views of the Great Sugar Loaf mountain and the twin tors of Two Rock that would have been possible from this location in the past.Fourwinds, p. 21. The tomb was first opened in 1832 by Alderman Blacker of St Andrew Street, Dublin but no record of this excavation survives.Healy, p. 114. However, when John O'Donovan visited on behalf of the Ordnance Survey, the locals told him that ashes had been found when the grave was opened. After the tomb was opened, many of the larger stones were removed by local stonecutters. The site was excavated again in 1945 by Seán P. Ó Riordáin and Rúaidhri de Valera who found sherds of decorated Beaker pottery, a polished hammer, a possible polishing stone and a flint scraper.Corlett, p. 26. A small amount of cremated human bone was also found.Corlett, p. 103. Following the excavation the monument was rebuilt in the form it appears in today. The tomb consists of a burial gallery over long divided into three chambers surrounded by a horseshoe-shaped arrangement of stones with a straight façade at the western end. At the southern end is a long stone with seven cupmarks on one surface. This form of rock art is usually associated with earlier
Neolithic The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several p ...
culture and is generally found on natural rock outcrops. The stone may have come from a natural boulder brought to the site during construction.


Other points of interest

There was once another megalithic tomb – known as The Greyhound's BedHerity, p. 25 – on the southern slopes of Two Rock near the
R116 road The R116 road is a regional road in Ireland which runs east-west from the N11 at Loughlinstown to the R115 in Ballyboden. It runs through the South of County Dublin for its entire length. Route The official definition of the R116 from the ...
between the villages of Glencullen and Brockey.Healy, p. 98. This was described in 1836 by the antiquarian Eugene O'Curry as a long stone long by wide.Pearson, p. 312. A sketch was made by the
Royal Society of Antiquaries of Ireland The Royal Society of Antiquaries of Ireland is a learned society based in Ireland, whose aims are "to preserve, examine and illustrate all ancient monuments and memorials of the arts, manners and customs of the past, as connected with the antiquit ...
in 1855 before the monument was destroyed. There is also a triangular-shaped standing stone, high approximately , north-northeast of Fairy Castle on the slope leading to Three Rock.


Access and recreation

Two Rock can be reached via the Coillte-owned forest recreation areas of Ticknock, Kilmashogue and Tibradden, which are managed by the Dublin Mountains Partnership. The mountain is traversed by the Dublin Mountains Way hiking trail that runs between Shankill and
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while the Wicklow Way hiking trail runs to the west of the summit.


Images


References


Notes


Bibliography

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External links


Two Rock Mountain
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Dublin Mountains PartnershipTwo Rock Mountain
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Mountain Views
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Megalithomania
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Megalithomania
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{{Mountains and hills of Leinster Marilyns of Ireland Archaeological sites in County Dublin Mountains and hills of Dún Laoghaire–Rathdown