Knocknarea is an anglicization of an Irish name. "Knock" means hill, but the etymology of the rest of the name is disputed. The Placenames Database of Ireland gives the Irish name as Cnoc na Riabh. However, P.W. Joyce preferred the interpretation Cnoc na Riaghadh. Cnoc na Riogha has also been suggested, as has Cnoc na Ré.
Medb's Cairn
On the summit of Knocknarea is a large cairn about wide and high, making it the largest such cairn in Ireland outside the Brú na Bóinne complex in Meath. Although it remains unexcavated, and is one of the biggest of such monuments still unexplored, it has many of the features of a classic passage tomb. It is known in Irish as Meascán Méabha or Miosgan Meadhbha meaning Medb's Lump. In English it is known variously as Medb's Cairn, Medb's Tomb, Medb's Nipple or Medb's Grave. It is believed to date to around 3000 BCE. Meabh is a figure in Irish mythology who features in stories dating to the early first millennium CE. Archaeologist Stefan Bergh, in his book Landscape of the Monuments, suggests that a large depression some distance to the west of the mound was the quarry from which the limestone for the monument was taken.
Other monuments
Meabh's Cairn, though by far the largest, is only one of a number of monuments on the summit of Knocknarea. In general the tombs are lined up North-South, and they may have been constructed to face the Carrowmore passage tomb cluster in the lowlands. Many of these monuments appear to have been small passage tombs; they were severely damaged by the excavations of antiquarians in the 19th century. Knocknarea seems to have been a major place of ritual and meeting in the Neolithic era. The entire top of the mountain on the eastern side is circumscribed by a -long embankment, wide and tall. Hut sites have been located on the inside of this area. A large amount of debris from making stone tools has been collected. The area around Sligo Bay is rich in pre-historic remains, and shares similar monuments and natural shapes. From Knocknarea can be seen other sites such as Croaghaun Mountain, Carrowkeel Megalithic Cemetery, and Cairns Hill. Carrowmore passage tomb cemetery is located at the eastern foot of Knocknarea. Strandhill, the coastal resort, lies at the western foot of Knocknarea. Cullenamore, an extensive beach area, is further south, and the southern aspect from Knocknarea overlooks Ballysadare Bay.
Conservation
Conservation issues regarding Knocknarea and Meabh's Cairn have been discussed in the local press. Large visitor numbers are causing damage to the cairn. Visitors are asked not to climb on the cairn, and not to take stones from the cairn. with Knocknarea and Meabh's Cairn in the background
