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Clogrennan Hill 336m,
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Clogrennan Hill Hill Cnoc Chloch Grianáin A name in Irish
(poss. Ir. ‡Cnoc Chloch Grianáin [PDT], 'hill of Cloch Grianáin or
stone of the sunny spot')
Laois County, in Binnion List, Feldspathic quartzitic sandstone Bedrock

Height: 336m OS 1:50k Mapsheet: 61 Grid Reference: S66881 74090 This summit has been logged as climbed by 30 members. Recently by: mountainmike, ei7kh, chalky, jlk, FilHil, eannanilamhna, wwwalker, Fergalh, eamonoc, pompeii, Ben-Ban, peterturner, Onzy, Geansai, kernowclimber
I have climbed this summit: NO (You need to be a logged-in member to change this.)

Longitude: -7.008851, Latitude: 52.813998 , Easting: 266881, Northing: 174090 Prominence: 271m,   Isolation: 11.9km,   Has trig pillar
ITM: 666815 674129,   GPS IDs, 6 char: ClgrHl, 10 char: ClgrnnHil
Bedrock type: Feldspathic quartzitic sandstone, (Clay Gall Sandstone Formation)

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 1076th highest summit in Ireland.

Trackback: http://mountainviews.ie/summit/917/
COMMENTS for Clogrennan Hill 1 of 1
Cows and Bullocks.
Short Summary created by jackill,  5 Nov 2010
Park at S669 737 A a communications installation entrance gate, room for 2 cars.Cross the road to two grassy fields seperated by a ditch.The trig pillar is in the second field at approximately S668 740 B.
Watch out for cows and bullocks. Trackback: http://mountainviews.ie/summit/917/comment/5676/
 
MountainViews.ie Picture about mountain Clogrennan Hill in area South Midlands, Ireland
Picture: View NE over Carlow town to the Wicklow Mountains
 
wicklore on Clogrennan Hill, 2009
by wicklore  17 May 2009
Clogrennan Hill is a part of the area of upland that stands over Carlow town. Clogrennan is only marginally higher than the surrounding bog. I initially parked at a Grotto on the road a few hundred metres to the north of the summit. I followed a track from the Grotto up to a communications mast and beyond it to the little lake marked on the map. The ‘lake’ is really an area where they scooped out the bog and the underlying rock in what appears to have been a quarrying operation. It is either the water table that is visible or it just filled with water. I searched for the ‘summit’ of this boggy area, and thought I found it on a little hill near the lake. However I wasn’t satisfied as there was no trig pillar as indicated on the map. Also I got the impression that this little hill was the by-product of the earthwork that has clearly gone on in this area. Finally by careful examination of the pattern of forestry, and comparing it to the map, I realised I was off by 150 metres from the summit. I needed to go further south but the ground was too boggy. I headed back to the car and followed the road around to S669 737, parking at another communications installation. I was now only a couple of hundred metres SE of the summit and a quick ramble across two fields brought me to the trig pillar. (S668 740) I found the views from Clogrennan to be truly special. From here the eye follows the plains across to the Wicklow Mountains which stretch far to the north, and the Blackstairs could be seen running off to the south. From this distance the two ranges seemed to merge into one continuous line of hills taking up the entire view to the east. Granted, the middle ground between the two is made up of lower hills such as Muskeagh, Lakeen, Ballycumber, and Preban Hill etc. However the effect is stunning and I would strongly recommend this hill (or the viewpoints on the surrounding roads) on a clear day. There are also good views down into Carlow town and a large number of motorists were parked along the roads enjoying the view. I’m not sure if Clogrennan could be turned into a lengthier walk as it seems to be all farmland or other private land around this area of upland. But if passing by be sure to pop up for those views! Trackback: http://mountainviews.ie/summit/917/comment/3766/
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MountainViews.ie Picture about mountain Clogrennan Hill in area South Midlands, Ireland
Picture: The Clogrennan Pit
Mining.
by simon3  22 Apr 2010
As wicklore mentions there is quite a bit of mining around here. A quick search reveals that there is coal and limestone mining in the area. Within 200m of the trig pillar and to the SW is a largish bank of earth which seems to have been thrown out of a quarry. It may be a bit higher than the trig pillar.

Here is a picture of the quarry. Potentially the view from Clogrennan should be good, but there was a lot of mist the day that we were there. It is interesting to note this is another industrialised top though it's not as affected as Seltannasaggart. Trackback: http://mountainviews.ie/summit/917/comment/4651/
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MountainViews.ie Picture about mountain Clogrennan Hill in area South Midlands, Ireland
Picture: Welcome committee Clogrennan style
 
Delivered to Clogrennan by An Post
by eamonoc  1 Jun 2013
24 May 2013, Having earlier climbed, Croughan and Greenoge in the Blackstairs it was off to see the An post Ras which had a King of the Mts challenge on the road at S669 737t (point A) beside the communications instillation . When all cyclists passed the road was safely crossed plus two grassy fields, no problem finding trig point. Weather was great and there were fantastic views towards the Wicklow and Blackstairsmts. Trackback: http://mountainviews.ie/summit/917/comment/14994/
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MountainViews.ie Picture about mountain Clogrennan Hill in area South Midlands, Ireland
Picture: Panorama of the view east (three photos stitched together).
Watch for cows, and avert your gaze from the mining!
by csd  30 Aug 2010
Stunning vistas, but livestock in the fields meant the dog had to stay in the car. As others have noted, there are great views to be had eastwards, but the mining operation spoils the vista westwards. Trackback: http://mountainviews.ie/summit/917/comment/6064/
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Short walk
by shaunkelly  26 Aug 2010
There is quite a few byroads and masts in this area. Look for the quarry then the group of four masts along with one aerial pole. Park there and cross the gate at the opposite side of the road heading South West. Walk 200m across two fields crossing one fence to trig point. Great views of Carlow town and surrounds. Trackback: http://mountainviews.ie/summit/917/comment/6010/
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(End of comment section for Clogrennan Hill.)

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