A4059 road

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A4059 road shield

A4059 road
The A4059 passes through the Brecon Beacons
Route information
Length: 9.5 mi (15.3 km)
Major junctions
North end: A470, Beacons Reservoir
  A470 A470 road
A465 A465 road
A4061 A4061 road
A465 A465 road
A470 A470 road
South end: A470, Abercynon
Mountain Ash
Road network

The A4059 road is a single-carriageway north-south road that runs between the A470 at Brecon Beacons National Park and the A470 at Abercynon.

Southbound, the A4059 begins by turning right off the A470 to the south of Storey Arms, just after passing the Beacons Reservoir. The road crosses the top of the reservoir's dam before climbing away from the trees and onto exposed moor land to the west of the A470. Thereafter the A4059 climbs to a height of 450 metres (1,480 ft), following the River Taff 100 m below. At this point along the road, the A470 can be clearly seen in the valley below. As the A4059 continues through the Brecon Beacons, there is little sign of vegetation, although sheep are commonplace. Leaving the park after passing through the small village of Penderyn, the road descends into Hirwaun, the first major destination on the southbound A4059. For a short segment past Hirwaun, the A4059 is synonymous with the A465. When the road leaves Hirwaun and the A465, it then turns southeast and follows the Cynon River, passing through Aberdare and Mountain Ash. Eventually, the A4059 reaches its southern terminus of Abercynon and rejoins the A470.[1][2]