Dduallt
2 classifications here — HuMP and Simm — belong to lists OpenFell holds only part of, so they have no list page. See how far the coverage goes.

- Height
- 662.8 m · 2,175 ft
- Prominence
- 139.6 m
- Grid reference
- SH 81057 27372
- Coordinates
- 52.83068, -3.76696
- County / area
- Gwynedd
- OS Landranger
- 124 125
- OS Explorer
- OL23E
- Summit feature
- cairn on outcrop
- Key col
- SH 7990 2646 (523.2 m)
About Dduallt
Dduallt, 'black hill' in Welsh, rises in central Snowdonia north of the A494 between Dolgellau and Llanuwchllyn. It is the sister peak of Rhobell Fawr and the two are often climbed together.
The Afon Dyfrdwy, the River Dee, rises on its eastern slopes. Approaches are usually made from the south-west, as large boggy areas lie to the north and east and the eastern face is very steep.
Background written from facts in the Wikipedia article on Dduallt (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
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- Sunset
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- Daylight
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- Civil twilight ends
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Computed astronomically for 52.831, -3.767. Plan your finish with the daylight safety planner.
Summit weather live
Loading forecast for the summit (663 m)…
Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).
Get food nearby
3 places to eat or drink within 10 km of the summit, rated under the Food Hygiene Rating Scheme (Scotland runs its own Food Hygiene Information Scheme, a pass/fail equivalent).
| Place | Type | Rating | Distance |
|---|---|---|---|
| Yr Eagles | Pub/bar/nightclub | 4 out of 5 | 6.9 km · NE |
| Rheilffordd Llyn Tegid Railway | Restaurant/Cafe/Canteen | 5 out of 5 | 7.7 km · E |
| Gwersyll Yr Urdd - Glan Llyn | Restaurant/Cafe/Canteen | 5 out of 5 | 8.4 km · NE |
Classifications and ratings are the local authority's own and can be coarse — this is a lead, not a guarantee of opening hours or that food is served to non-residents. Follow a name through to the official rating page to check, and confirm before you rely on it.
Food hygiene data from the Food Standards Agency and Food Standards Scotland (Open Government Licence v3.0). Distances and directions computed by OpenFell from the summit.
Which hill this one belongs to
Dduallt is not counted as an independent hill in its own right. In prominence terms it belongs to Rhobell Fawr (734 m) — the nearest Marilyn you can reach from this summit without first dropping below its key col, 523 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 |
|---|---|---|
| Rhobell Ganol | 521 m | 2.5 km |
| Ffridd yr Allt-llwyd | 500.4 m | 2.6 km |
| Rhobell Fawr | 734 m | 2.9 km |
| Moel Cae'r-defaid West Top | 531.1 m | 2.9 km |
| Rhobell-y-big | 504 m | 2.9 km |
| Craig y Benglog | 525.2 m | 3 km |