Gauge: 1ft 11½in (600mm)
Gloddfa Ganol mountain adventure centre was open for a few years from 1970. It was on a small part of the massive Oakeley Quarry which closed that year. The objects listed here date from this period. The site was bought by Alfred MacAlpine in 1998 and extraction was started once more using modern earth moving machinery.
| Catalogue Number | Railway | Type | Description | Image |
|---|---|---|---|---|
| TYWRM:GG001 | Gloddfa Ganol | owner's plate | Gloddfa Ganol owner's plate from Kerr; Stuart Wren locomotive No. 3118 DRYW BACH |  |
| TYWRM:GG002 | Gloddfa Ganol | nameplate | nameplate from Kerr; Stuart Wren locomotive No. 3118 DRYW BACH; never fitted. |  |
| TYWRM:GG003 | Gloddfa Ganol | guide book | Gloddfa Ganol Slate Mine guide book 1990 |  |