| Cors Fochno | |
|---|---|
 Cors Fochno, Aberleri Nature Reserve | |
 | |
| Location | Ceredigion, Wales |
| Coordinates | 52°30′11″N 4°00′54″W / 52.503°N 4.015°W |
| Governing body | Countryside Council for Wales |
Cors Fochno (Welsh pronunciation: [kɔrs ˈvɔχnɔ]) is a raised peat bog near the village of Borth, in the county of Ceredigion, Wales. Lying on the south side of the Dyfi estuary, it forms a component part of the Dyfi National Nature Reserve. It was designated a UNESCO biosphere reserve in 1976, and is the only such reserve in Wales.[1] A boardwalk leading from the northern edge of the bog skirts the edges of the bog and surrounding woodland.
A significant portion of the 264 hectares (652 acres) former peatland complex was taken for agriculture; the surviving core area supports the largest expanse of primary near-natural raised bog in an estuarine context within the United Kingdom.[2]