SH6558 : The Cantilever Stone
Strenuous; difficulty depends on route

Glyder Fach

994m Elevation
74m Prominence
Wales Country

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SH6558 : The Cantilever Stone

John Fielding Photo source

Overview

Glyder Fach is a 994.3 m mountain in the Glyderau of Eryri (Snowdonia). Its rough summit plateau is known for the Cantilever Stone and nearby Castell y Gwynt. Walking approaches via the eastern shoulder differ substantially from the exposed scrambling on Bristly Ridge. All routes require mountain preparation and careful navigation.

Glyder Fach

Overview and summit

Glyder Fach rises to 994.3 m in the Glyderau of Eryri (Snowdonia), Wales. The highest point is a large natural rock on a huge pile of boulders. Reaching it involves clambering over the summit rocks. The Cantilever Stone is a separate feature on the summit plateau; Castell y Gwynt stands to the west. Neither should be confused with the highest point. DoBIH · UKHillwalking

Choosing an approach

All routes require preparation for rough mountain terrain. The short notes below are planning outlines, not navigation instructions; use a detailed map and route guide and plan the descent before setting out.

  • Miner's Path from Pen-y-Gwryd: a walking approach to the east shoulder near Llyn Caseg-fraith, followed by bouldery ground to the plateau. Return the same way. Some sections are faint in mist. This is a different path from the Miners' Track up Yr Wyddfa from Pen-y-Pass.
  • Ogwen via Devil's Kitchen: climb from Cwm Idwal to Llyn y Cwn, ascend Glyder Fawr, then continue east to Glyder Fach. Steep steps, loose scree and boulder fields make this a strenuous mountain walk.
  • Pen-y-Gwryd to Ogwen: combine the Miner's Path ascent with a westward crossing over Glyder Fawr and descent through Devil's Kitchen. Arrange transport for this linear route. It is a two-summit traverse, not the whole Glyderau range.
  • Tryfan and Bristly Ridge: a serious scrambling circuit using Tryfan's North and South Ridges, Bwlch Tryfan, Bristly Ridge and Y Gribin. Sustained climbing, exposure and route-finding distinguish this from the walking approaches. Published Bristly Ridge grades vary; assess the actual line and conditions. Y Gribin also involves scrambling.
  • Nant Peris: the Llwybr y Carw approach through Cwm Padrig reaches Llyn y Cwn, then Glyder Fawr before Glyder Fach. The lower path is steep and eroded, with misleading branches, especially in descent.

Route overview · Miner's Path · Nant Peris approach · Bristly Ridge

Access and facilities

Choose your start point to suit the route. Ogwen Centre has limited, charged parking, toilets and refreshments. The T10 serves Ogwen from Bangor, Bethesda and Betws-y-Coed; check current timetables and return services. Observe roadside restrictions and local signs. Official Ogwen visitor information

Landscape and name

The mountain belongs to a landscape of volcanic and sedimentary rocks shaped by glaciation and frost weathering. Its shattered rock forms the bouldery plateau and striking tors. The Welsh name is commonly interpreted as 'small heap of stones', from cluder or cludair and fach. Geoscience Wales · Cwm Idwal Partnership

Safety

Paths can vanish among the rocks, and cliffs border the plateau. Do not improvise a descent in cloud. Bristly Ridge is a scrambling route; the adjacent Bristly Screes are a different feature. Ogwen Mountain Rescue's archived Oggie 8 guidance warns against descending those eroded, unstable screes and describes an alternative towards the Miners' Path. This is archived guidance, not a current closure notice. Ogwen Mountain Rescue

Carry a map and compass and know how to use them, warm waterproof layers, food, water, a torch and a charged phone. Check the mountain forecast and choose a route suited to the least experienced person in the group. Snow, ice, strong winds and poor visibility increase the seriousness; turn back when conditions exceed your skills. In an emergency call 999, ask for Police, then Mountain Rescue. Eryri safety advice

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Route planning notes

These notes describe possible approaches. Check a route's map and access information when planning your walk.

Miner's Path from Pen-y-Gwryd

From Pen-y-Gwryd, take the Miner's Path north to the eastern shoulder near Llyn Caseg-fraith, then climb west across rough, bouldery ground to Glyder Fach. Return the same way. The path becomes faint in places and reaching the highest rocks needs a final clamber. This is separate from Yr Wyddfa's Miners' Track at Pen-y-Pass.

Hard

Ogwen via Devil's Kitchen and Glyder Fawr

From Ogwen Centre, follow the Cwm Idwal paths and steep Devil's Kitchen approach to Llyn y Cwn. Climb the scree to Glyder Fawr, then cross Bwlch y Ddwy Glyder and pass south of Castell y Gwynt to Glyder Fach. Return by the same route unless a separate descent has been planned. Rough ground, steep steps and poor-visibility navigation require mountain experience.

Hard

Pen-y-Gwryd to Ogwen over the Glyders

A linear two-summit traverse: ascend the Miner's Path from Pen-y-Gwryd near Llyn Caseg-fraith to Glyder Fach, continue west past Castell y Gwynt to Glyder Fawr, then descend via Llyn y Cwn and the Devil's Kitchen path to Ogwen. Arrange return transport. This crosses the two Glyders, not the whole Glyderau range; expect rough boulders, scree and demanding navigation.

Hard

Tryfan and Bristly Ridge scrambling circuit

An experienced scrambler's circuit from Ogwen: ascend Tryfan's North Ridge, descend its South Ridge to Bwlch Tryfan, then scramble Bristly Ridge to Glyder Fach. Return via Y Gribin and Cwm Bochlwyd. Bristly Ridge has sustained, exposed climbing; published grades vary. Y Gribin also involves scrambling. Plan every section with a detailed guide and avoid wet, icy or windy conditions.

Very Hard

Nant Peris via Llwybr y Carw and Glyder Fawr

From the Nant Peris side, use the steep Llwybr y Carw route through Cwm Padrig to Llyn y Cwn, then climb Glyder Fawr and continue east to Glyder Fach. Return by the planned outward route. The eroded lower path has confusing branches and needs careful navigation, especially in descent. Use a detailed map and guide; this is not a direct ascent through Cwm Glas Mawr.

Hard
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Hill facts and local notes

Classifications

Furth Simm Hewitt Nuttall High Hills of Britain

Elevation

994m

3,262 ft

Prominence

74m

Coordinates

53.1048, -4.0084

SH656582

OS Map

115

Explorer: OL17W

At the Summit

The highest point is a large natural rock on a huge pile of rocks. Reaching it involves clambering over boulders. The Cantilever Stone is a separate feature on the summit plateau, and the jagged tor of Castell y Gwynt stands to the west; neither is the summit marker.

Terrain & Geology

Rocky mountain paths boulder fields loose scree steep steps and rough moorland. Walking approaches are possible via the eastern shoulder; Bristly Ridge is serious exposed scrambling. Y Gribin also includes scrambling and the highest summit rocks require clambering.

Glyder Fach lies in the volcanic and sedimentary landscape of the Glyderau. Volcanic rocks, including rhyolite, form its rugged crags. Glaciation shaped the surrounding cwms, while frost weathering helped create the shattered rocks and tors of the summit plateau. Glyderau is the name of the mountain range.

Views & Scenery

In clear conditions, the summit area gives views towards Tryfan, Glyder Fawr and the Yr Wyddfa (Snowdon) massif. Cloud can obscure these views completely.

History & Heritage

Name Origin

Commonly interpreted as 'small heap of stones'. Glyder is linked to the Welsh cluder or cludair, meaning a heap or pile; fach means small. The name reflects the rocky character shared with neighbouring Glyder Fawr.

Historical Significance

Glyder Fach's north-facing cliffs are an established climbing venue. Rockfax records the first ascent of the classic Direct Route in 1907.

Getting There & Facilities

Parking

The small National Park car park at Ogwen Centre is charged, with limited spaces and card/contactless payment. Observe A5 roadside restrictions. For a Pen-y-Gwryd start, check the local parking signs and current arrangements. Choose parking to match the route and consider public transport when Ogwen is full.

Public Transport

The TrawsCymru T10 links Bangor, Bethesda and Betws-y-Coed and stops at Ogwen. Check current timetables, connections and the last return service before setting out. Southern approaches use different stops; plan transport for the chosen start and finish.

Nearby Facilities

Ogwen Centre has toilets and a refreshment outlet. Check opening times and carry all food, water and equipment needed for the mountain. Bethesda, Capel Curig and Pen-y-Gwryd offer further services according to the chosen approach.

Safety Information

Known Hazards

  • Cliffs border the boulder-strewn plateau; paths can fade among rocks and navigation becomes difficult in mist.
  • Loose scree, steep steps and wet rocks create slip and fall hazards. Reaching the highest point requires clambering.
  • Bristly Ridge involves serious exposed scrambling and route-finding; Y Gribin also includes scrambling. Published Bristly Ridge grades vary.
  • Ogwen Mountain Rescue’s archived Oggie 8 guidance warns against descending the eroded, unstable Bristly Screes beside the ridge. Plan a suitable descent with a detailed map and current route advice.
  • Check the mountain forecast and carry suitable clothing, navigation equipment, food, water and a torch. In an emergency call 999, ask for Police, then Mountain Rescue.

Seasonal Hazards

Snow and ice can cover paths and make rocks treacherous. Strong winds, cold, poor visibility and short winter daylight increase the seriousness of every route. Choose conditions and terrain within your skills and equipment; turn back when needed.

General Safety Tips

  • Check weather conditions before setting out
  • Carry appropriate clothing and equipment
  • Let someone know your planned route
  • Take a map, compass, and GPS device
  • Carry emergency supplies: food, water, first aid kit, torch

Hills

Some common questions about the hills answered

Are there group walks up Glyder Fach?

Many walkers use Walkmates to join or organise walks with others. You can check for group walks around Glyder Fach through the maps

Are there other walkers around Glyder Fach?

Activity varies by location and time, but Walkmates lets you see whether others have shared walks or shown interest in this area. Find other people through the walking friends search walking friends for Glyder Fach search or of course create your own walk for Glyder Fach

Can I organise a walk to Glyder Fach?

Yes. If there aren’t any walks listed already, you can create a walk and make it available for others to join.

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How do I find a walk up this hill?

There are often multiple ways to walk this hill, depending on experience and route preference. Walkmates helps you explore walks and routes that others have shared.

Can I suggest a new route up Glyder Fach?

Yes. You can suggest or create routes to share with others. Walkmates focuses on the social side of walking, so routes are used to help people organise walks and explore areas together, rather than as detailed navigation tools or route libraries.

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