TrailTrack
Glasgwm
Wales

Glasgwm

780M
2557FT

About Glasgwm

Standing at the southern tip of the Arans, this broad, grassy Marilyn offers a quieter alternative to its loftier neighbours. The ascent reveals a plateau-top surprise in the form of Llyn y Fign, while the summit cairn provides a clear perspective across the Dyfi valley towards the rugged ridges of Cadair Idris.

Key Statistics

Rank
58th Highest in Wales
Parent Range
Snowdonia
Prominence
?
214.8m
Nearest Town
Whaley Bridge
Geology
Old Red Sandstone

Find It

OS Grid Reference
SH836194
Latitude
52.7596°N
Longitude
3.7264°W

Did You Know?

  • The name is Welsh, combining 'glas' (green) and 'cwm' (valley or hollow), likely describing the verdant, bowl-shaped slopes that stand out against the more shattered, rocky terrain found further north on the Aran ridge.
  • It is often climbed as the final peak on the 'Aran Ridge' traverse, a classic high-level walk starting from Llanuwchllyn that includes the 905-metre Aran Fawddwy.
  • Just below the summit lies Llyn y Fign, a small, quiet tarn that provides a striking foreground for views towards the west, though it can be difficult to locate in mist on the wide plateau.
  • From the summit, the view to the south-west is framed by the distinctive profile of the Cadair Idris massif, while the Berwyn range dominates the eastern horizon.
  • The summit plateau is famously boggy; a hillwalker's success here is often measured by whether they return to the valley with both boots still firmly attached to their feet.

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3D Flyover

Experience a virtual tour of Glasgwm with our interactive 3D terrain map.