Gauge: Not known for certain but probably 1ft 11½in (600mm)
Little is known about this small slate quarry near Llanbedr. There was a short internal tramway for moving slate and other materials.
| Catalogue Number | Railway | Type | Description | Image |
|---|---|---|---|---|
| TYWRM:NC001.1 | Nant Col Quarry | rail chair | Cast iron chair for light bulb rail; Nant Col Quarry; Llanbedr |  |
| TYWRM:NC001.2 | Nant Col Quarry | rail chair | Cast iron chair for light bulb rail; Nant Col Quarry; Llanbedr |  |
| TYWRM:NC002 | Nant Col Quarry | rail | "Flat bottom rail(10""); fishplate with 2 holes(5""); three small spikes Nant Col Quarry; Llanbedr" |  |