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Derryveagh Mountains Area , Cen: Lough Keel (Meencorwick) Subarea
Feature count in area: 38, all in Donegal, OSI/LPS Maps: 1, 11, 2, 6
Highest Place: Errigal 751m

Starting Places (29) in area Derryveagh Mountains:
Aleahan Lough, Altderry Bridge, An Chúirt Hotel, Astelleen Burn Waterfall, Derryreel Lough, Dunlewy Lough E, Dunlewy Lough Viewing Point, Errigal Hostel, Errigal Parking, Glenveagh Bridge, Glenveagh National Park SW, Glenveigh Castle, Keel Lough N, Losset North, Lough Acrobane Farmhouse, Lough Ascardan, Lough Barra Slipway CP, Lough Barra W, Meenagoppoge Burn Bridge, Mín Uí Bhaoil, Muckish Gap Shrine, Muckish North Access Road, Nabrackbaddy Lough, Procklis Lough, River Barra Bridge NE, River Barra Bridge SW, Sand Lough NE, Sruhancrolee Bridge, Stranamarragh Bridge

Summits & other features in area Derryveagh Mountains:
Cen: Dooish: Dooish 651.5m, Dooish SW Top 528m, Dooish SE Top 553.9m, Saggartnadooish 506.4m, Saggartnadooish East Top 478.9m
Cen: Errigal: Errigal 751m, Mackoght 555m
Cen: Glenveagh Upper: Crockfadda 485m, Crockfadda East Top 454m, Crockballaghgeeha 480m, Crockmulroney 430m, Staghall Mountain 486m, Croaghnasaggart 480m, Maumlack 480m
Cen: Lough Keel (Meencorwick): Crockglass 489m, Addernymore 416m, Grogan More 457m, Crocknafarragh 517m, Crocknafarragh SE Top 470m
Cen: Slieve Snaght: Crockfadda 529m, Crockfadda NE Top 502m, Crocknasharragh 495m, Drumnalifferny Far NE Top 535m, Bingorms 578m, Drumnalifferny Mountain 596m, Drumnalifferny Mountain NE Top 585m, Slieve Snaght 678m
N: Aghla: Aghla Beg 563.9m, Aghla Beg South Top 602.3m, Aghla More 581.2m, Ardloughnabrackbaddy 472.5m, Crocknalaragagh 470.6m
N: Muckish: Muckish 667.1m, Croaghaderry 222m, Crockawama 238m, Derryreel 232m
S: Doochary: Croaghleconnell 266m
S: Dungloe: Crovehy 315m

Note: this list of places may include island features such as summits, but not islands as such.
Rating graphic.
Crockglass, 489m Hill An Cnoc Glas A name in Irish,
Place Rating ..
(Ir. An Cnoc Glas [OSI], 'the green hill'), Donegal County in Ulster province, in Carn Lists, An Cnoc Glas is the 603rd highest place in Ireland.
Grid Reference B89230 16634, OS 1:50k mapsheet 1
Place visited by: 31 members, recently by: dodser, madfrankie, Colin Murphy, Lucky1, eamonoc, Ulsterpooka, ilenia, paulbrown, Lauranna, Fergalh, finkey86, shaunkelly, Cobhclimber, melohara, hgboyle
I visited this place: NO (You need to be a logged-in member for this.)
Longitude: -8.169064, Latitude: 54.997025, Easting: 189230, Northing: 416634, Prominence: 44m,  Isolation: 0.8km
ITM: 589182 916616
Bedrock type: Whitish quarztite with pebble beds, (Ards Quartzite Formation)

  Short or GPS IDs, 6 char: Crckgl, 10 char: Crockglass

Gallery for Crockglass (An Cnoc Glas) and surrounds
Summary for Crockglass (An Cnoc Glas): A place to just sit and enjoy.
Summary created by Harry Goodman 2011-11-22 09:06:14
   picture about Crockglass (<em>An Cnoc Glas</em>)
Picture: View across NE to Errigal
For a direct climb of this hill go left off the R251 at A (B908 205) and find a suitable parking place off road. Walk down the road and cross the bridge between Dunlewy Lough and Lough Nacung Upper. Follow the road S and then SW to cross over the Stuhannameel (stream) B (B902 189). Leave the road and ascend up the hillside SW to Pt. 352, C (B896 179). Continue up S, passing around tiny L. Croreagh and on up to Pt 455, D (B896 170) and then 200m further along Pt 471, E (B896 168). Once there go SW for 500m to the top F (B89230 16636). From the bridge between the two loughs it is some 7k out and back. It is also possible to extend the route and take in Crocknafarragh SE Top and Crocknafarragh. Out and back adds just over over 3k to the walk.
Member Comments for Crockglass (An Cnoc Glas)

   picture about Crockglass (<em>An Cnoc Glas</em>)
Picture: Summit rock on Crockglass with Slieve Snaght in background
An excellent vantage point
by Harry Goodman 12 Aug 2010
I climbed this hill on 10 August as part of a round of five tops which I had not previously visited. My approach was from Crocknafarragh SE Top G (B88424 16451) (see report on this hill for earlier part of route). The going was easy and after crossing the saddle I was soon up at the stone coverd summit area marked by a very large boulder bedecked by a small cairn of stones F (B89230 16636). I had fine views NW across Lough Nacung toTievealehid and N to the fine cone of Errigal. SE across L Atirrive Little and its bigger brother L Atirrive was the formidable and dominant bulk of Slieve Snaght and other lower tops in the Derryveagh Mountains. An excellent spot to sit and simply enjoy the surroundings. From my vantage point I noticed a fine ridge running NW over Pt 471 and then more or less N down over two more spot heights that could be used for ascent and /or descent of Crockglass from a track H (B900 189) above Dunlewy but would add that anyone considering the route would need to ensure there is no impenetrable forestry blocking the way. As for me the fifth and final hill in my round, Addernymore, beckoned and I set off in pursuit of same. Linkback:
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British summit data courtesy:
Database of British & Irish Hills