| Location | |
|---|---|
  Ratgoed Location in Gwynedd | |
| Location | near Aberllefenni |
| County | Merioneth (now Gwynedd) |
| Country | Wales, UK |
| Coordinates | 52°41′23″N 3°48′01″W / 52.6897°N 3.8004°W SH 78327 11782 |
| Production | |
| Products | Slate |
| Type | Quarry |
| History | |
| Opened | before 1844 |
| Active | c.1840–late 1840s; 1851–1900; 1901–1903; 1907–1946 |
| Closed | 1946 |
Ratgoed quarry (also known as Alltgoed quarry) was the northernmost of the slate quarries served by the Corris Railway. It is one mile north of Aberllefenni in Gwynedd, Mid Wales, on the western side of Mynydd Llwydiarth. The quarry primarily worked the Narrow Vein, though it also produced some Broad Vein slates.[1]