Cefn yr Ystrad
| Articul per Ladin Gherdëina | 
|
| Cefn yr Ystrad | |
|---|---|
 | |
| Piza | |
| Autëza | 619 m |
| Prominënza | 180 m |
| Geografia | |
| Stat | Riam Unì |
| Raion | Powys |
| Grupa de crëps | Brecon Beacons |
| Coordinedes | 51°48'52"N, 3°19'38"W |
  Cefn yr Ystrad Cefn yr Ystrad (Riam Unì) | |
L Cefn yr Ystrad ie n crëp tl Riam Unì. L toca pra la ciadëina de crëps Brecon Beacons y à na autëza de 619 metri.