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| Site of Special Scientific Interest | |
| Location | Mid and South Glamorgan |
|---|---|
| Grid reference | SS9102575373 |
| Coordinates | 51°28′00″N3°34′13″W / 51.4668°N 3.5702058°W |
| Interest | Geological |
| Area | 1.37 ha |
| Notification | 26 March 1997 |
Cnap Twt is a Site of Special Scientific Interest in the Vale of Glamorgan, south Wales. Located roughly three miles south of Bridgend near St Brides Major. This former disused quarry is of national importance as a site of fossil plant remains, and was established in 1997. [1]