Mynydd y Gwair
| Mynydd y Gwair (Penlle’r Castell) | |
|---|---|
| Highest point | |
| Elevation | 373 m (1,224 ft) |
| Listing | Marilyn |
| Geography | |
| Location | Swansea, Wales, United Kingdom |
| OS grid | SN6648109470 |
Mynydd y Gwair (Penlle’r Castell) (English: The Hay Mountain) is a mountain in Swansea, Wales. Mynydd y Gwair is 373 m (1,224 ft) high.