Wales · Eryri National Park

Moel yr Ogof

HewittNuttallHuMPSimm

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.

Moel yr Ogof, 655 m, Gwynedd
Moel yr Ogof, 655 m, Gwynedd. Photo by David Crocker, CC BY-SA 2.0 · Wikimedia Commons
Height
655 m · 2,149 ft
Grid reference
SH 55627 47863
Coordinates
53.00854, -4.15328
County / area
Gwynedd
Region
Snowdonia
OS Landranger
115
OS Explorer
OL17W 254
Summit feature
small cairn
Key col
SH559475 (537 m)

About Moel yr Ogof

Moel yr Ogof is a subsidiary summit of Moel Hebog in Snowdonia, paired with the slightly lower Moel Lefn. Its distinguishing feature is industrial: a trial mine for asbestos was driven at the summit after a thin seam of white asbestos was found there, but the quantity proved too small to be worth working commercially.

Background written from facts in the Wikipedia article on Moel yr Ogof (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 53.009, -4.153. Plan your finish with the daylight safety planner.

Summit weather live

Loading forecast for the summit (655 m)…

Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).

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.

RouteTotal lengthFrom summit
Snowdonia Slate Trail 135 km 2 km

Route lines © OpenStreetMap contributors (ODbL); distance from the summit computed by OpenFell.

Which hill this one belongs to

Moel yr Ogof is not counted as an independent hill in its own right. In prominence terms it belongs to Moel Hebog (784 m) — the nearest Marilyn you can reach from this summit without first dropping below its key col, 537 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

PeakHeightDistance
Moel Lefn 638 m 0.8 km
Moel Hebog 783.7 m 1.3 km
Craig Cwm Silyn 734 m 3.9 km
Trum y Ddysgl 709.7 m 3.9 km
Mynydd Drws-y-coed 695 m 4 km
Mynydd Tal-y-mignedd 653 m 4.1 km