Chwarel y Fan is a peak in the Black Mountains in south-eastern Wales. It is the highest rise on the long ridge which extends southeastwards from Rhos Dirion. The ridge continues southeastwards to the lesser summit of Bal-Mawr whose top is adorned by a trig point at 607 metres (1,991 ft) above sea level. About one km (0.62 mi) southeast along the ridge is the lesser top of Bal-Bach at a height of just over 520 metres (1,710 ft). Chwarel y Fan is the county top of the historic county of Monmouthshire, and is also the highest point in the current local government area of Monmouthshire.

Chwarel y Fan
The Chwarel y Fan summit ridge
Highest point
Elevation	679 m (2,228 ft)
Prominence	72 m (236 ft)
Parent peak	Waun Fach
Listing	Hewitt, Nuttall, County top
Coordinates	51°57′30″N 3°04′51″W / 51.95826°N 3.080948°W / 51.95826; -3.080948
Naming
English translation	quarry of the beacon
Language of name	Welsh
Geography
Chwarel y Fan Within Monmouthshire
Location	Black Mountains, South Wales
OS grid	SO258294
Topo map	OS Landranger 161

The summit is on a thin ridge and is crowned by a cairn. On the other sides of the valleys: to the west is Pen Twyn Mawr and to the east is Black Mountain.^[1]