TrailTrack
Craig-las [Tyrrau Mawr]
Wales

Craig-las [Tyrrau Mawr]

661M
2168FT

About Craig-las [Tyrrau Mawr]

Situated on the western arm of the Cadair Idris massif, this Hewitt offers a tranquil alternative to the crowded main summit. Its northern face drops away into the dramatic cliffs of Tyrrau Mawr, providing a grandstand view across the Mawddach Estuary towards Barmouth and the rugged Rhinogydd mountains beyond.

Key Statistics

Rank
113th Highest in Wales
Parent Range
Snowdonia
Prominence
?
100.4m
Nearest Town
Llanfihangel-y-Pennant
Geology
You are hiking over ancient mudstones layered with volcanic ash and lava. This landscape is also shaped by granite-like rocks that once cooled deep underground.

Find It

OS Grid Reference
SH677135
Latitude
52.7030°N
Longitude
3.9594°W

Did You Know?

  • The name Craig-las translates from Welsh as 'Blue Crag,' though the alternative name Tyrrau Mawr—meaning 'Great Towers'—more accurately describes the formidable basaltic cliffs that define its northern aspect.
  • While many walkers pass within a few hundred metres of the summit while following the Pony Path from Ty-nant, the actual high point is often bypassed by those focused solely on reaching Penygadair.
  • The summit offers a superior perspective of the Cregennen Lakes sitting on the shelf below, a view often missed from the higher, more central peaks of the range.
  • Geologically, the hill is part of the Llyn Cawl Mudstone Formation, but its 'towers' are formed from tougher volcanic tuffs and lavas that have resisted erosion more effectively than the surrounding rock.
  • It serves as an excellent escape for the misanthropic hiker; you can watch the queues forming at the Cadair Idris trig point while enjoying the exact same Atlantic breeze in total solitude.

Have you walked this?

Log it now to add it to your collection.

You need to open an account before you can track your trails.

3D Flyover

Experience a virtual tour of Craig-las [Tyrrau Mawr] with our interactive 3D terrain map.