Esgeiriau Gwynion · Foel Rhudd
3 classifications here — Marilyn, HuMP and Simm — belong to lists OpenFell holds only part of, so they have no list page. See how far the coverage goes.

- Height
- 669.9 m · 2,198 ft
- Prominence
- 170 m
- Grid reference
- SH 88929 23621
- Coordinates
- 52.79866, -3.64889
- County / area
- Gwynedd
- Region
- Bala to Welshpool
- OS Landranger
- 124 125
- OS Explorer
- OL23E
- Summit feature
- no feature
- Key col
- SH 8846 2298 (499.8 m)
About Esgeiriau Gwynion
The Welsh name Esgeiriau Gwynion translates as 'white shanks'. It is the smallest of the three Marilyns of the Aran range, the others being Aran Fawddwy and Glasgwm.
Lying east of Aran Fawddwy across the gap of Bwlch Sirddyn, the hill curves round Cwm Cynllwyd towards the Berwyn range at Foel y Geifr. Its tops are boggy throughout, rising from a wild plateau of peat bog that a road crosses at Bwlch y Groes.
Background written from facts in the Wikipedia article on Esgeiriau Gwynion (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
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Computed astronomically for 52.799, -3.649. Plan your finish with the daylight safety planner.
Summit weather live
Loading forecast for the summit (670 m)…
Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).
Finding the summit
ground 30m NE, by small cairn, is 0.3m lower.
The recorded summit point is no feature. That distinction matters on broad or flat tops, where the obvious cairn is not always the true high point.
- Record revised
- 23-Oct-23
- Drop measured from
- SH 8846 2298 · 499.8 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.
The Esgeiriau Gwynion group
6 other listed summits sit in the same prominence group, with Esgeiriau Gwynion as the independent hill at its head.
| Summit | Height | Drop |
|---|---|---|
| Foel Rhudd | 659 m | 19 m |
| Foel y Geifr | 626 m | 111 m |
| Moel y Cerrig Duon | 625 m | 79 m |
| Llechwedd Du | 613 m | 34 m |
| Foel Goch | 613 m | 47 m |
| Trum y Gwragedd | 611 m | 24 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 |
|---|---|---|
| Foel Rhudd | 659 m | 0.7 km |
| Llechwedd Du | 613.4 m | 1.3 km |
| Foel Hafod-fynydd | 689 m | 1.5 km |
| Aran Benllyn | 885 m | 2.3 km |
| Erw y Ddafad-ddu | 872 m | 2.5 km |
| Gwaun Lydan | 632 m | 2.6 km |