| Afon Cerist | |
|---|---|
 The valley of the Afon Cerist seen from Cribin Fawr | |
| Location | |
| Country | Wales |
| Physical characteristics | |
| Source | Maesglase |
| • elevation | 1,419 ft (433 m) |
| Mouth | |
• location | Dinas Mawddwy |
• coordinates | 52°43′14″N 3°41′15″W / 52.7206°N 3.6876°W |
| Length | 4.7 miles (7.6 km) |
The Afon Cerist is a small river that flows from underneath Craig Portas, the cliffs on the north side of Maesglase mountain, to meet the River Dyfi at Dinas Mawddwy.[1] It forms the northern border of the Dyfi Hills.