Tyrrau Mawr

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Tyrrau Mawr\Craig-las
Tyrrau Mawr from Llyn Cregennen
Highest point
Elevation 661 m (2,169 ft)
Prominence 103 m (338 ft)
Parent peak Cadair Idris
Listing Hewitt, Nuttall, HuMP
Location Gwynedd, Wales
Parent range Cadair Idris
OS grid SH711130
Topo map OS Landranger 124, Explorer OL23
Easiest route Hike

Tyrrau Mawr or Craig-las is a subsidiary summit of Cadair Idris in the Snowdonia National Park, in Gwynedd, northwest Wales. It lies to the west of Cyfrwy, and can be climbed by taking a west bearing from the Pony Path at Rhiw Gwredydd. Its north face is a crag, known as Craig-las. Below the crags lies Llyn Cregennen with its small island. The reflection of Craig-las from this lake is one of the famous images associated with Snowdonia.

The summit is grassy and marked by a few stones. To the east of the summit lies the large ancient cairn, Carnedd Lwyd. It is often climbed in combination with Craig-y-llyn.[1]


  1. ^ Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. ISBN 1-85284-304-7.

External links[edit]

Coordinates: 52°41′58″N 3°54′25″W / 52.699428°N 3.907032°W / 52.699428; -3.907032