| Garreg Las | |
|---|---|
| Twyn Swnd | |
 Cairns on the summit of Garreg Las | |
| Highest point | |
| Elevation | 635 m (2,083 ft) |
| Prominence | 92 m (302 ft) |
| Parent peak | Fan Brycheiniog |
| Listing | Hewitt, Nuttall, Sub-HuMP |
| Coordinates | 51°52′04″N 3°46′36″W / 51.8679°N 3.7767°W |
| Naming | |
| English translation | blue rock |
| Language of name | Welsh |
| Geography | |
 | |
| Location | Carmarthenshire, Wales |
| Parent range | Brecon Beacons |
| OS grid | SN778207 |
Garreg Las is a subsidiary summit of Fan Brycheiniog in the Brecon Beacons National Park (Welsh: Parc Cenedlaethol Bannau Brycheiniog) in Carmarthenshire, southern Wales. Its summit sits towards the northern end of a broad north-south ridge, Esgair Hir ("long ridge"), at 635 metres (2,083 ft) above sea level. The hill is sometimes referred to as Twyn Swnd.[1]
A subsidiary top just over 1 kilometre (0.62 mi) to the north of the main summit is Carreg yr Ogof (meaning "rock of the cave"), whose name reflects its limestone geology. Its top, at 585 metres (1,919 ft) above sea level, is crowned by a trig point.[2]
- ^ Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. ISBN 1-85284-304-7.
- ^ Ordnance Survey Explorer map OL12 'Brecon Beacons National Park: western area'