Two Rock

Three Rock Mountain (Irish: Binn Trí Charraig; archaic: Sliabh Ruadh) is a mountain in Co Dublin, Ireland. It is 444 metres (1,457 feet) high and forms part of the group of hills in the Dublin Mountains which comprises Two Rock, Three Rock, Kilmashogue and Tibradden Mountains. The mountain takes its name from the three groups of granite rocks at the summit. It was once believed that these features were man-made: for instance, Gabriel Beranger wrote of them in 1780, "I take them to be altars upon which sacrifices were offered […] the regularity which is observed in piling them convinces me they are the work of man, as they could not grow in that position". In fact, the three outcrops are tors: natural geological features produced by the gradual process of weathering. Today, the summit is dominated by the many radio masts and towers that use the site to broadcast their signals across the Dublin area below. The forestry plantations on the slopes consist mainly of Sitka spruce, Japanese larch, Scots pine, Monterey pine and lodgepole pine.

98FM is a local radio station in Dublin, Ireland, operated by Bauer Media Audio Ireland, under a sound broadcasting contract from the Broadcasting Authority of Ireland. The station broadcasts on the 98.1 MHz FM frequency. 98FM's broadcast antenna is located on Three Rock Mountain, County Dublin at 5 kW, and can be heard in Dublin and neighbouring counties. 98FM also has a relay in north County Dublin, broadcasting on 97.4 MHz. Since 2022 the station has been marketed as "Dublin's Good Times"

Ballyedmonduff Wedge Tomb is a wedge-shaped gallery grave and a National Monument in Dún Laoghaire–Rathdown, Ireland.

The Barnacullia quarries are a number of former, and current, granite quarries in the townland of Barnacullia on the north-eastern slopes of Three Rock Mountain in the county of Dún Laoghaire–Rathdown, Ireland. According to a Historic Landscape Character Assessment (HLCA) conducted in 2006, the area was at one point "an important source of granite for the buildings of nearby Dublin". The main quarry at Barnacullia is sometimes referred to as Murphystone quarry, after the name of a company who used/uses it, or Blue Light quarry after the name of a well-known nearby pub. Other quarries onsite include Black Quarry, where UPC Communications Ireland Ltd erected a stayed telecommunications mast.

Ticknock or Tiknock (Irish: Tigh an Chnoic, meaning 'house of the hill') is a townland southwest of Sandyford in Dublin at the northeastern foothills of the Dublin Mountains. The townland of Tiknock is in the electoral division of Dundrum, and has an area of approximately 2.6 square kilometres (1.0 sq mi).There are a number of walking and biking trails in the locality, including in the Ticknock Forest amenity which is managed by Coillte. Described as one of Coillte's "most popular" and most visited sites, during 2020 Coillte replanted a number of sections of the commercial coniferous woodland at Ticknock with native deciduous trees.Originally a largely rural area at the foot of Three Rock Mountain, a number of housing developments were built in the area (between the townland and the M50 motorway to the north) in the early 21st century.

Glencullen (Irish: Gleann Cuilinn, meaning 'valley of the holly') is a village and townland in the county of Dún Laoghaire–Rathdown in south County Dublin, Ireland. It is also the name of the valley above one end of which the village sits, and from which it takes its name, and is on the R116 road, on the slopes of Two Rock Mountain. The highest point of the area is at a height of about 300 metres (980 ft), making Glencullen one of the highest villages in Ireland.Glencullen is in the civil parish of Kilternan and the barony and Poor Law Union of Rathdown. 376 people lived in the village as of the 2022 census, up from 238 as of the 2016 census.

Glencullen Standing Stone is a standing stone and National Monument located in Glencullen, County Dublin, Ireland.

Kilmashogue or Kilmashoge (Irish: Cill Mochióg) is a mountain in Dún Laoghaire–Rathdown county in Ireland. It is 408 metres (1,339 feet) high and forms part of the group of hills in the Dublin Mountains which comprises Two Rock, Three Rock, Kilmashogue and Tibradden Mountains. The forest plantation on its northern slope, which is composed mainly of Sitka spruce, Scots pine and beech, is a habitat for Sika deer, hares, rabbits and foxes. A number of prehistoric monuments can be found on the slopes of the mountain. Coillte, the state-owned enterprise that manages the forestry on the mountain's slopes, suggest that the name Kilmashogue is a corruption of coill na fumsaoige, which means "wood of the ash", or coill na fuiseoige, which means "wood of the lark".

Kilgobbin Cross is a high cross and National Monument located in Stepaside, County Dublin, Ireland.

Stepaside (Irish: An Chéim) is a village on the outskirts of Dublin located on its southside, located in Dún Laoghaire–Rathdown, Ireland. The area is situated 4 kilometres (2.5 mi) south of Dundrum.

Prince William's Seat at 555 metres (1,821 ft), is the 296th–highest peak in Ireland on the Arderin scale, however, it does not have the elevation to quality as a Vandeleur-Lynam. Prince William's Seat is on the border of the Wicklow Mountains and Dublin Mountains in Ireland, and lies on the northern side of the Glencree valley, positioned at its entrance. Prince William's Seat is separated by a small col from neighbouring Knocknagun, which is also 555 metres (1,821 ft) in height. Prince William's Seat and Knocknagun are popular peaks with hill-walkers.

Kiltiernan Tomb, also called Kiltiernan Portal Tomb or Kiltiernan Dolmen, is a dolmen located in County Dublin, Ireland. It is a National Monument.