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Place Search
Feature count in area: 67, by county: : 60, Torfaen (UA): 1, Blaenau Gwent (UA): 1, Glamorgan [Morgannwg] (CoH) West Glamorg: 1, Mid Glamorgan (CoA) Rhondda Cynon Taff (: 1, Cardiff (UA): 1, Newport (UA): 1, Bridgend (UA): 1,
Highest Place: Craig y Llyn 600m
Starting Places in area Neath to Chepstow:
None for this area
Summits & other features in area Neath to Chepstow:
Beacon Hill 306m, Blaen-y-cwm 416m, Bryn-serth 410m, Caerphilly Common 271m, Cefn Coch 571m, Cefn Eglwysilan 382m, Cefn Gwyngul 470m, Cefn y Rhondda 481m, Cefnrhos-gwawr 440m, Coed Cae Aberaman 436m, Coed yr Hendre 413m, Coetgae Isaf 450m, Coety Mountain (boundary) 574m, Coity Mountain [Coety Mountain] 578m, Craig y Llyn 600m, Craig y Llyn (boundary) 589m, Craig yr Allt 273m, Foel Fynyddau 370m, Foel Trawsnant 373m, Garth Hill 259m, Garth Hill 307m, Gwastad 551m, Hirwaun Common 515m, Mynydd Aberdar 457m, Mynydd Bedwellte 486m, Mynydd Blaengwynfi 528m, Mynydd Caerau 555m, Mynydd Carn-y-cefn 550m, Mynydd Cilfach-yr-encil 445m, Mynydd Corrwg Fechan 412m, Mynydd Dinas 258.1m, Mynydd Emroch - Craig Emroch 241m, Mynydd Garnclochdy 448m, Mynydd Gethin 491m, Mynydd Machen 362m, Mynydd Maendy 301m, Mynydd Margam 349m, Mynydd Pen-y-fan 409m, Mynydd Pen-y-graig 416m, Mynydd Ton 539m, Mynydd Twyn-glas 472m, Mynydd Ty'n-tyle 429m, Mynydd Tynewydd [Mynydd Ystradffernol] 518m, Mynydd y Ffaldau 430m, Mynydd y Glyn 377m, Mynydd y Grug 355m, Mynydd y Lan 385m, Mynydd Ynyscorrwg 502m, Pen Craig Abercwmboi 408m, Rhymney Hill 457m, Trostrey Hill 199m, Twmbarlwm 419m, Twn y Waun 451m, Twyn Brynbychan 411m, Twyn Crugyrafan [Graig Fawr] 559m, Tylorstown Tip 443m, Wentwood 309m, Werfa [Mynydd Llangeinwyr] 568m, Y Domen Fawr 504m
Black Mountains: Blorenge 561m
Welsh Valleys: Cefn y Brithdir 446m, Moel y Hyrddod 493m, Mulfran 524m, Mynydd James 550m, Mynydd Pen-y-cae 573m, Pen Garnbugail 477m, Pen-rhiw-Ifor 502m
Note: this list of places may include island features such as summits, but not islands as such.
Highest Place: Craig y Llyn 600m
Starting Places in area Neath to Chepstow:
None for this area
Summits & other features in area Neath to Chepstow:
Beacon Hill 306m, Blaen-y-cwm 416m, Bryn-serth 410m, Caerphilly Common 271m, Cefn Coch 571m, Cefn Eglwysilan 382m, Cefn Gwyngul 470m, Cefn y Rhondda 481m, Cefnrhos-gwawr 440m, Coed Cae Aberaman 436m, Coed yr Hendre 413m, Coetgae Isaf 450m, Coety Mountain (boundary) 574m, Coity Mountain [Coety Mountain] 578m, Craig y Llyn 600m, Craig y Llyn (boundary) 589m, Craig yr Allt 273m, Foel Fynyddau 370m, Foel Trawsnant 373m, Garth Hill 259m, Garth Hill 307m, Gwastad 551m, Hirwaun Common 515m, Mynydd Aberdar 457m, Mynydd Bedwellte 486m, Mynydd Blaengwynfi 528m, Mynydd Caerau 555m, Mynydd Carn-y-cefn 550m, Mynydd Cilfach-yr-encil 445m, Mynydd Corrwg Fechan 412m, Mynydd Dinas 258.1m, Mynydd Emroch - Craig Emroch 241m, Mynydd Garnclochdy 448m, Mynydd Gethin 491m, Mynydd Machen 362m, Mynydd Maendy 301m, Mynydd Margam 349m, Mynydd Pen-y-fan 409m, Mynydd Pen-y-graig 416m, Mynydd Ton 539m, Mynydd Twyn-glas 472m, Mynydd Ty'n-tyle 429m, Mynydd Tynewydd [Mynydd Ystradffernol] 518m, Mynydd y Ffaldau 430m, Mynydd y Glyn 377m, Mynydd y Grug 355m, Mynydd y Lan 385m, Mynydd Ynyscorrwg 502m, Pen Craig Abercwmboi 408m, Rhymney Hill 457m, Trostrey Hill 199m, Twmbarlwm 419m, Twn y Waun 451m, Twyn Brynbychan 411m, Twyn Crugyrafan [Graig Fawr] 559m, Tylorstown Tip 443m, Wentwood 309m, Werfa [Mynydd Llangeinwyr] 568m, Y Domen Fawr 504m
Black Mountains: Blorenge 561m
Welsh Valleys: Cefn y Brithdir 446m, Moel y Hyrddod 493m, Mulfran 524m, Mynydd James 550m, Mynydd Pen-y-cae 573m, Pen Garnbugail 477m, Pen-rhiw-Ifor 502m
Note: this list of places may include island features such as summits, but not islands as such.
Place Rating ..
Grid Reference ST25999 97845, Mapsheet(s): 171
Place visited by: 6 members, recently by: rhw, oakesave, Fergalh, MichaelE, chalky, jimbloomer
I visited this place: NO
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Short or GPS IDs, 6 char: MynyTw, 10 char: MynydTwyng
Linkback: https://mountainviews.ie/summit/B2292/
Gallery for Mynydd Twyn-glas and surrounds
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Add a Place Comment for Mynydd Twyn-glas 
Feeling Blue
by Fergalh
27 Oct 2020
Park to west at entrance to long track up to radio masts. Then take right hand fork behind masts to get to trig point. Great views over the valleys. In English this translates as Blue Dune Mountain...no sign of the blue dunes here mostly heather in essence Linkback: mountainviews.ie/summit/B2292/comment/21075/
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British summit data courtesy:
Database of British & Irish Hills
Database of British & Irish Hills
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is a Hill-walking Website for the island of Ireland. 2500 Summiteers, 1480 Contributors, maintainer of lists such as: Arderins, Vandeleur-Lynams, Highest Hundred, County Highpoints.