Wales · Eryri National Park

Craig-las · Tyrrau Mawr

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.

Height
661 m · 2,169 ft
Grid reference
SH 67707 13561
Coordinates
52.70349, -3.95942
County / area
Gwynedd
OS Landranger
124
OS Explorer
OL23W
Summit feature
no feature: ground 10m from fence junction
Key col
SH691135 (560 m)

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 52.703, -3.959. Plan your finish with the daylight safety planner.

Summit weather live

Loading forecast for the summit (661 m)…

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

Finding the summit

Surveyor's note

ground 8m W is just lower.

The recorded summit point is no feature: ground 10m from fence junction. That distinction matters on broad or flat tops, where the obvious cairn is not always the true high point.

Survey method
Abney level
Record revised
09-Feb-20
Drop measured from
SH691135 · 560 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.

Which hill this one belongs to

Craig-las is not counted as an independent hill in its own right. In prominence terms it belongs to Cadair Idris - Penygadair (893 m) — the nearest Marilyn you can reach from this summit without first dropping below its key col, 560 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
Craig-y-llyn 622 m 2 km
Cyfrwy 811 m 2.7 km
Cadair Idris - Penygadair 892.7 m 3.4 km
Craig Cwm Amarch 791.9 m 3.6 km
Mynydd Moel 863 m 5 km
Gau Graig 683.7 m 6.7 km