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Energy sapping trudge over, rough, sponge-like terrain.

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Long walk for one Carn.

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Hare Island: A very pleasant four hours

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Knockbreteen: Be careful where you park

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Donegal SW Area   N: Sliabh Tuaidh Subarea
Place count in area: 24, OSI/LPS Maps: 10 
Highest place:
Slieve League, 596.4m
Maximum height for area: 596.4 metres,     Maximum prominence for area: 470 metres,

Note: this list of places includes island features such as summits, but not islands as such.
Rating graphic.
Crockuna Hill Cnoc Onna A name in Irish (Ir. Cnoc Onna [OSI†], 'hill of Onna') Donegal County in Ulster Province, in Carn List, Flaggy quartzite and dark schist Bedrock

Height: 400m OS 1:50k Mapsheet: 10 Grid Reference: G62860 88040
Place visited by 31 members. Recently by: Colin Murphy, markmjcampion, eamonoc, annem, LorraineG60, noucamp, melohara, MichaelG55, paulbrown, Fergalh, hgboyle, shaunkelly, groe, Wilderness, simoburn
I have visited this place: NO (You need to be a logged-in member to change this.)

Longitude: -8.577357, Latitude: 54.738928 , Easting: 162860, Northing: 388040 Prominence: 115m,  Isolation: 1.9km
ITM: 562819 888029,   GPS IDs, 6 char: Crckn, 10 char: Crockuna
Bedrock type: Flaggy quartzite and dark schist, (Slieve League Formation)

The Irish form Cnoc Onna can be inferred from Lag Onna on the Discovery map.   Cnoc Onna is the 949th highest place in Ireland.

Linkback: https://mountainviews.ie/summit/834/
COMMENTS for Crockuna (Cnoc Onna) 1 of 1  
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MountainViews.ie Picture about mountain Crockuna (<i>Cnoc Onna</i>) in area Donegal SW, Ireland
Picture: Summit cairn looking NE
 
Pretty easy but rewarding Carn
Short Summary created by Colin Murphy  14 Jun 2024
Parking available at G 640 887 starA near McMonigle Stoneworks.
Walk SW to G 63975 88685 starB to access Sli Cholmcille and follow Sli Cholmcille to a stile at G630 886 starC. Cross fence and head directly south up the gently rising slope – mostly grass, short heather and large areas of scree, but easy terrain generally. Summit is marked by a cairn next to a fence. Fine views in all directions. Linkback: https://mountainviews.ie/summit/834/comment/5593/
 
In footsteps of St Colmcille .. by gerrym   (Show all for Crockuna (Cnoc Onna))
 
Crockuna via the Sli Cholmcille .. by noucamp   (Show all for Crockuna (Cnoc Onna))
 
(End of comment section for Crockuna (Cnoc Onna).)

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)
MountainViews.ie, a Hill-walking Website for the island of Ireland. 2400 Summiteers, 1480 Contributors, maintainer of lists: Arderins, Vandeleur-Lynams, Highest Hundred, County Highpoints etc