Note: this list of places includes island features such as summits, but not islands as such.
Clogrennan HillHillCnoc Chloch Grianáin A name in Irish(poss. Ir. ‡Cnoc Chloch Grianáin [PDT], 'hill of Cloch Grianáin or stone of the sunny spot')LaoisCounty in Leinster Province, in Binnion List, Feldspathic quartzitic sandstone Bedrock
Height:336mOS 1:50k Mapsheet: 61Grid Reference: S66881 74090 Place visited by 41 members. Recently by: Oscar-mckinney, Carolyn105, benjimann9, SenanFoley, markwallace, Pepe, conormcbandon, TommyV, finkey86, melohara, TommyMc, mountainmike, ei7kh, chalky, jlk I have visited this place: NO (You need to be a logged-in member to change this.)
This is the highest point in Slieve Margy. The name Clogrennan Hill does not appear on OS maps but is confirmed by sources such as Richard Griffith's Geological and Mining Report on the Leinster Coal District (1814), which states that the River Dinan has its source near the summit of Clogrennan-Hill. Clogrenan is a townland straddling the Laois/Carlow border and also a district. On the summit plateau is also Rossmore Bog, Rossmore being a townland in the parish of Killeshin, barony of Slievemargy. This hill appears to be the location of Temair Mairge (the Tara of Margy) mentioned in Lebor na hUidre and the Yellow Book of Lecan.
Clogrennan Hill is the 1084th highest place in Ireland. Linkback: https://mountainviews.ie/summit/917/