Pen yr Helgi Du
| Articul per Ladin Gherdëina | 
|
| Pen yr Helgi Du | |
|---|---|
 | |
| Piza | |
| Autëza | 833 m |
| Prominënza | 84,7 m |
| Geografia | |
| Stat | Riam Unì |
| Raion | Contea de Conwy |
| Coordinedes | 53°8'53"N, 3°56'54"W |
  Pen yr Helgi Du Pen yr Helgi Du (Riam Unì) | |
L Pen yr Helgi Du ie n crëp tl Riam Unì. L toca pra la ciadëina de crëps Eryri y à na autëza de 833 metri.