Mynydd Ceiswyn

Mynydd Ceiswyn - Gwynedd
© Ian Medcalf and licensed for reuse under this Licence

Mynydd Ceiswyn is the 3725th highest peak in the British Isles and the 226th tallest in Wales


605.0 m (1985 ft)


27.4 m (90 ft)

Survey method

Leica NA730


Southerly of two small knolls 5m apart


  • Subsimm
  • Subdewey

Hill / mountain range

Cadair Idris

Nearest town

Dolgellau, Gwynedd

OS map sheets

OS25: 023E (Cadair Idris & Bala Lake/Llyn Tegid)
OS25: 023W (Cadair Idris & Bala Lake/Llyn Tegid)
OS50: 124 (Dolgellau & Porthmadog)

Notes & comments

Demoted to Subdewey following line survey. See Database Notes