| Croaghanmoira | |
| Other Name: | Cruachán Mhaigh Rath |
| Elevation M: | 664 |
| Elevation Ref: | [1] |
| Prominence M: | 209 |
| Listing: | 100 Highest Irish Mountains, Marilyn, Hewitt, Arderin, Simm, Vandeleur-Lynam |
| Language: | Irish |
| Translation: | little stack of Moira |
| Location: | County Wicklow, Republic of Ireland |
| Range: | Wicklow Mountains |
| Map: | island of Ireland |
| Map Relief: | yes |
| Coordinates: | 52.9184°N -6.3665°W |
| Grid Ref Ireland: | T0992286504 |
| Topo: | OSi Discovery 62 |
| Type: | Quartzite bedrock |
Croaghanmoira [2] at 664m (2,178feet), is the 136th–highest peak in Ireland on the Arderin scale,[3] and the 165th–highest peak on the Vandeleur-Lynam scale.[4] [5] Croaghanmoira is situated in the far south-east corner of the Wicklow Mountains range, and sits on its own small massif with several other lesser but well known peaks, separated from the nearby larger massif of Lugnaquilla by the Laragh to Aghavannagh road; the summit of Croaghanmoira has a distinctive "pyramidal" profile.[6]
According to Irish academic Paul Tempan, the "Moira" is from the title of the "Earl of Moira" who owned lands around Greenan, and historical papers record references to the purchase of the Ballinacor Estate and House from Francis Rawdon-Hastings, 1st Marquess of Hastings, the "Earl of Moira" in 1805.[2] At the time of the purchase, the mountain would have been the "Cruachán" behind Ballinacor House.[2] Tempan notes another name for the mountain, The Mottie.[2]
Croaghanmoira's prominence of 209m (686feet), qualifies it was a Marilyn, and also ranks it as the 87th-highest mountain in Ireland on the MountainViews Online Database, 100 Highest Irish Mountains, where the minimum prominence threshold is 100 metres.[7] [8]
Croaghanmoira's massif includes the northern subsidiary summit of Croaghanmoira North Top 575m (1,886feet), which has a prominence of 27m (89feet), thus qualifying it an Arderin Beg.[5] [6] Immediately to the east of Croaghanmoira is the summit of Ballinacor Mountain 531m (1,742feet), which has a prominence of 56m (184feet), thus qualifying it an Arderin.[5] To the west of Croaghanmoira is the summit of Carrickashane Mountain 508m (1,667feet), which has a prominence of 43m (141feet), and thus also qualifies as an Arderin.[5] [6]