|Location Map ( geo)|
|Distance:||1.5 miles (2.4 km)|
|Route outline (key)|
The B4512 is a short road in South Wales running across the ridge between the valleys of the Rhondda Fawr and the Rhondda Fach. The road was originally unclassified but gained its number in the early 1930s.
The road starts at a junction with the A4058 in Ystrad and climbs steeply to the east. There's a roundabout at the top of the ridge, after which the road descends past the cemetery to end at a roundabout junction with the A4223 close to Pont-y-gwaith.