Craig Portas East Top · Mynydd Gartheiniog

About Craig Portas East Top

Craig Portas East Top, known as Mynydd Gartheiniog, is a mountain in southern Eryri (Snowdonia), Gwynedd, and one of the Dyfi hills. It forms a long ridge running south from the cliff of Craig Portas above Dinas Mawddwy, parallel to Mynydd Dolgoed, which lies to the west.

On its eastern flank sits the Gartheiniog slate quarry, which was once served by the Hendre-Ddu Tramway.

Background written from facts in the Wikipedia article on Mynydd Gartheiniog (CC BY-SA 4.0). Heights, prominence and grid references come from the Database of British & Irish Hills, not from Wikipedia.

Access rights here

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 52.713, -3.766. Plan your finish with the daylight safety planner.

Finding the summit

The recorded summit point is no feature. On broad or flat summits the obvious cairn is not always the true high point.

Survey method

Leica NA730

Record revised

19-May-21

Drop measured from

SH809145 · 553.1 m

Classification history: col surveyed by Leica RX1250.

Survey notes are field observations recorded in the Database of British & Irish Hills (v18.3, CC BY 4.0) by the hill-surveying community.

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).

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

Craig Portas East Top is not counted as an independent hill in its own right. In prominence terms it belongs to Maesglase (679 m) — the nearest Marilyn you can reach from this summit without first dropping below its key col, 553 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