What is "cyfrwy"

Cyfrwy is a subsidiary summit of Cadair Idris in the Snowdonia National Park, in Gwynedd, northwest Wales. It lies to the west of Cadair Idris and is often climbed with Cadair Idris by taking the Pony Path.

The summit is bare and rocky and marked with a cairn. The north and east face has large cliffs. A rock climb/extreme scramble known as the Cyfrwy ridge is found here. This ridge is very steep and rope and rock climbing skills will be needed. To the east is Tyrrau Mawr and Craig-y-llyn, while to the south is Craig Cwm Amarch.