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Onzy: Track 3211 in area near Coomcathcun South Top, Dunkerron Mountains (Ireland)
Dunkerrons:Above Sneem
Length: 16.6km, Creator time taken: 5h37m, Ascent: 985m,
Descent: 959m

Places: Start at V6692670004, Sliabh na Seasca (mullach theas), Sliabh na Seasca, An Bhinn Láir, Cnoc Breasail, Knocknagantee Near West Top, end at V6708671001 1km N from Start
Logged as completed by 1

Route over the two Coomcathcuns, An Bhinn Lair and Cnoc Breasail.

Parking is in the farm yard used by Simon3 in track 2457 and Colin Murphy as mentioned on the Coomcathcun South Top hill page. The descent is on a track which runs right to the col between Knocknagantee and Cnoc Breasail. This is a serious construction with little obvious purpose which rises to c.600m and is wide enough in places for two vehicles to pass. While a normal car would be pushing it, a 4x4 could probably make it all the way. Note however, there are two gates at the bottom. I had used this track before on a descent from Knocknagantee but had not realised how high it goes; it is potentially an easy way onto, as well as off, these hills too.

Utterly brutal terrain means this is a tough walk and I found it a little frustrating in that there is little break from constant changes of direction and elevation; there is literally nowhere to stride out and cover real ground; every inch has to be fought for.
It is worth calling attention to one part of the route; the descent from An Bhinn Lair towards the lough which lies in the col between it and Cnoc Breasail. This is a potentially lethal descent and huge care has to be taken. I have never been crag fast, but if it is to ever happen, here would be as likely a place as any. The descent, at least as I made it, involved lowering yourself onto ledge after ledge, searching each time for the next ledge and always without clear visibility of the entire descent. I am sure I made some bad choices and maybe if I had taken a little time and studied the entire descent more closely I might have found a better way. A cursory glance at the OS Map, will show you very confused contours around these parts, so a bit of probing around on the ground before committing to any particular descent would be in order. I did make it down but I definitely won't recommend that anyone do it the way I did!

[I subsequently took a good look at Captain Vertigo's track 2495 which covers the same descent - unfortunately while I was aware of this track, I hadn't gone as far as to download and take it with me. While the Captain seems to have had an easier descent, though not any kind of 'doddle' as his cautions make clear, overlaying the two tracks reveals only relatively minor divergences, meaning careful route finding at a micro level is critical.]

Uploaded on: Thu, 31 Mar 2016 (20:21:24)
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NOTE: ALL information such as Ascent, Length and Creator time taken etc should be regarded as approximate. The creator's comments are opinions and may not be accurate or still correct.
Your time to complete will depend on your speed plus break time and your mode of transport. For walkers: Naismith's rule, an approximate though often inaccurate estimate, suggests a time of 4h 58m + time stopped for breaks
NOTE: It is up to you to ensure that your route is appropriate for you and your party to follow bearing in mind all factors such as safety, weather conditions, experience and access permission.

* Note: A GPS Height in the elevation profile is sourced from the device that recorded the track. An "SRTM" height is derived from a model of elevations for parts of the earth. More detail

OSi logo OSNI/LPS logo
Some mapping:
Open Street Map
(Various variations used.)
British summit data courtesy:
Database of British & Irish Hills
(Creative Commons Licence), a Hill-walking Website for the island of Ireland. 2400 Summiteers, 1480 Contributors, maintainer of lists: Arderins, Vandeleur-Lynams, Highest Hundred, County Highpoints etc