
- Height
- 633 m · 2,077 ft
- Prominence
- 21 m
- Grid reference
- SH 55152 52649
- Coordinates
- 53.05141, -4.16250
- County / area
- Gwynedd
- Region
- Snowdonia
- OS Landranger
- 115
- OS Explorer
- OL17W 254
- Summit feature
- cairn
- Key col
- SH550522 (612 m)
About Y Garn
Y Garn forms the eastern end of the Nantlle Ridge in Eryri and is reckoned a top of Mynydd Drws-y-Coed rather than a separate mountain. Its north face falls away in steep cliffs.
The summit area is the high point of a broad rocky plateau, on which two large shelter cairns stand. At 633 m it is listed as a Nuttall.
Background written from facts in the Wikipedia article on Y Garn (Nantlle Ridge) (CC BY-SA 4.0). Heights, prominence and grid references come from the Database of British & Irish Hills, not from Wikipedia.
Access rights here
Conditional Right to roam: Right to roam only on mapped CRoW open access land.
Permission needed Wild camping: Permission needed everywhere.
General position for Wales — local byelaws, seasonal restrictions and closures can override it. Full details: access rights in Wales · check another location.
Daylight at this summit today
- Sunrise
- —
- Sunset
- —
- Daylight
- —
- Civil twilight ends
- —
Computed astronomically for 53.051, -4.163. Plan your finish with the daylight safety planner.
Summit weather live
Loading forecast for the summit (633 m)…
Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).
Finding the summit
The recorded summit point is cairn. On broad or flat summits the obvious cairn is not always the true high point.
- Survey method
- obvious summit
- Record revised
- 28-Oct-01
- Drop measured from
- SH550522 · 612 m
Survey notes are field observations recorded in the Database of British & Irish Hills (v18.3, CC BY 4.0) by the hill-surveying community.
Long-distance paths past this hill
One waymarked long-distance route runs within 2.5 km of the summit — useful if you are linking this hill into a longer walk, or want a made path for the approach.
| Route | Total length | From summit |
|---|---|---|
| Snowdonia Slate Trail | 135 km | 1 km |
Route lines © OpenStreetMap contributors (ODbL); distance from the summit computed by OpenFell.
Which hill this one belongs to
Y Garn is not counted as an independent hill in its own right. In prominence terms it belongs to Trum y Ddysgl (710 m) — the nearest Marilyn you can reach from this summit without first dropping below its key col, 612 m.
Grouping is by prominence alone: a summit belongs to the nearest higher Marilyn it connects to without a deeper intervening col. Over a large massif that can gather hills no one would walk in a single day, and which few would describe as parts of the same mountain — it is a measure of independence, not a suggested route.
Nearest listed peaks
| Peak | Height | Distance |
|---|---|---|
| Mynydd Drws-y-coed | 695 m | 0.9 km |
| Trum y Ddysgl | 709.7 m | 1.2 km |
| Mynydd Tal-y-mignedd | 653 m | 2 km |
| Mynydd Mawr | 698 m | 2.4 km |
| Craig Cwm Silyn | 734 m | 3.5 km |
| Moel Lefn | 638 m | 4.1 km |