Caeau Ty'n-llwyni is a Site of Special Scientific Interest in Brecknock, Powys, Wales.
| Site of Special Scientific Interest | |
  Location within Wales | |
| Location | Wales |
|---|---|
| Grid reference | SN9016044016 |
| Coordinates | 52°05′01″N 3°36′16″W / 52.083565°N 3.6043913°W |
| Interest | Biological |
| Area | 7.97 ha |
| Notification | 3 November 1982 |
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