| Waun-oer | |
|---|---|
| 
 Waun-oer from the southeast 
 | 
|
| Highest point | |
| Elevation | 670 m (2,200 ft) | 
| Prominence | 119 m (390 ft) | 
| Listing | Hewitt, Nuttall, HuMP | 
| Coordinates | 52°43′02″N 3°47′55″W / 52.7171°N 3.7985°WCoordinates: 52°43′02″N 3°47′55″W / 52.7171°N 3.7985°W | 
| Naming | |
| Translation | Cold Bog (Welsh) | 
| Geography | |
| Location | Snowdonia, Wales | 
| Parent range | Cadair Idris | 
| OS grid | SH785147 | 
| Topo map | OS Explorer OL23 | 
Waun-oer is a mountain in Snowdonia, North Wales, situated approximately four miles to the south-west of Aran Fawddwy. It is one of the peaks in the Dyfi hills, a subgroup of the Cadair Idris group. It is a top of Maesglase and the summit consists of a trig point that crowns an uneven grassy plateau. It is connected to Cribin Fawr to the east. To the north lies Cadair Idris, while Tarren y Gesail lies to the west.