Dunmore Cave (from Irish Dún Mór , meaning “big fast”) is a limestone cave in solutional Bally Foyle, Kilkenny, Ireland. It is formed in the Lower Carboniferous (Viséan) limestone in Clogrenan Formation.  It is a show cave open to the public, especially known for its rich archaeological discoveries and for being the site of a Viking massacre in 928. 
The caves located east of and near the N78 Kilkenny – Castle. The road and about 11 km (6.8 mi) north of Kilkenny City  The entrance is in the townland of Mohill,  where a tourist center has been established at the site.With views of the river valley Dinnin, it has been found in an isolated outcrop of limestone at Castle Plateau. 
Dunmore is one of the largest of Ireland’s caves. It contains only a quarter of a mil passages and at its deepest point, down to 150 feet (46 m), but it has some fine calcite formations. The most spectacular is the Market Cross, a distinctive cross-shaped column of 19 feet (5.8 m) high.
Dunmore Cave was named National Monument of Commissioners of Public Works in 1944,   , but the development as a show cave with visitor center and tours not until 1967, on behalf of the respected archaeologist OCH cane scientists JC Coleman. The cave was closed in 2000 for archaeological work and cleanup, and reopened in 2003. 
The earliest historical references to the cave is to be found in the triads in Ireland, dating from the 14th to the 19th century, where ” UAM Chnogba ,UAM Slángae and Dearc Fearna ” listed under the heading “the three darkest places in Ireland”.  the last, that is, “the cave of the Alders,” is generally thought to be the current Dunmore Cave,  while the first two translate as caves of Knowth and Slaney.  it is not known exactly the cave system / passage tombs near the river Slaney is being referred to, with the most likely, they Baltinglass. Other sources translate the listed places Rath Croghan, cave or crypt Slane  and the “Cave of the Ferns”. 
The Annals of the Four Masters , dated to the 17th century, Dearc Fearnaregistered as the site of a large Viking massacre in 928 AD:
“Godfrey, grandson Imhar, with foreigners ATH Cliath, demolished and looted Dearc Fearna, where thousands of people were killed in the years mentioned in the verse:
Nine hundred years without sorrow, twenty-eight, it has turned out, “Since Christ came to our relief, the looting of Dearc-Fearna.” 
Gofraith, Imhar grandson, with the Galls of Dublin, Gor Gora thoghail & Ferns Dercé organs, arms were slain en mi Gora year-si more people, as is said ISIN RAN,
C-EGF nine years without misery en Icke her twenty-eight-absolute, Christ went from Gora-ending c-HELP co Dercé toghail Fearna.
The earliest writings on the cave of an archaeological character came from Bishop George Berkeley,   , whose report dated 1706 describes a visit he made to the cave as a boy. The essay was not published until 1871.  In 1869, Arthur Wynne Foot, a doctor, made an archaeological visit to the cave with the Rev. James Graves and Peter Burtchaell and discovered large amounts of human remains, which they collected.  In its reports, Foot meticulously documented his conclusions, and references culled from the writings of scholars over the preceding 120 years. 
In 1999, a collection of 43 silver and bronze objects discovered in a rocky gorge deep in the cave. Archaeologists dated the storage, consisting of silver bullion and conical buttons woven of fine silver, to 970 AD. 
- ^ Jump up to: abcde Coleman, JC. (1965) The caves in Ireland. Tralee, Co.Kerry: Anvil Press. pp. 14-16.
- Hoppa upp^ “Dunmore Cave” (PDF) . Kilkenny – County Geological Site rapport . Geological Survey of Ireland . Hämtad13 mars 2014 .
- ^ Jump up to: ab O’Donovan, John, ed. (1856). “The earliest period in 1616”. Annals of the Four Masters. II (2nd ed.). Dublin.pp. 624-625.Retrieved 2010-11-06.
- Jump up ^ “Heritage Ireland: Dunmore Cave”. Retrieved 2010-10-09.
- Hoppa upp^Dunnington, NJ; Coleman, JC (1950). “Dunmore Cave, Co. Kilkenny”. Proceedings of the Royal Irish Academy .53B :. 15-24 JSTOR 20.490.874 .
- Jump up ^ “Show Caves of Ireland: Dunmore Caves”. Retrieved 2010-10-09.
- Jump up ^ Meyer, Kuno; Lavelle, Hilary; Purcell, Emer; et al., eds.(transcribed in 2005). Triads in Ireland. Todd Lecture. 13 (1st ed.).Dublin: Hodges, Figgis & Co.. Retrieved 2010-11-06. Check date values in: (help) | date =
- ^ Jump up to: ab Meyer, Kuno, ed. (1906). Triads in Ireland. Todd Lecture.13 (1st ed.). Dublin: Hodges, pp Figgis & Co. 4-5. . Retrieved 2010-11-06.
- ^ Jump up to: abc . Foot, Arthur Wynne (1878), “An account of a visit to the cave Dunmore, Co. Kilkenny, with some comments on human remains found there. ” Journal of the Royal Society of Antiquaries of Ireland. 4. Dublin. In : 65-94. Retrieved 2010-11-06.
- Jump up ^ Hardman, Edward T. (1875-1877). “The two new discoveries of human and other bones, were discovered in the Cave of Dunmore, Co.Kilkenny “. Proceedings of the Royal Irish Academy. Science. 2 . 168-176 JSTOR 20490001.
- ^ Jump up to: a b Berkeley, George (1901) . “Description of the Cave of Dunmore”. In Fraser, Alexander Campbell. Works of George Berkeley.IV . Oxford: Clarendon Press. pp. 73-84. Retrieved 2010-11-06.
- Jump up ^ Buckley, Laureen. “Dunmore Cave – A Viking Massacre Site”.Retrieved 2010-10-09.