This delightful little walk, which is not at all strenuous, follows the lines drawn by two of the area’s main 18th- and 19th-century transport arteries. The outward leg follows the now defunct Merthyr, Tredegar and Abergavenny Railway, often known as the ‘Heads of the Valleys Railway’.
In places the line follows the path of the much earlier Bailey’s Tramroad, which ran from Crawshay Bailey’s Ironworks at Nantyglo to Govilon Wharf on the banks of the canal. The initial construction, which stretched between Abergavenny and Brynmawr, was started by the Merthyr, Tredegar and Abergavenny Railway Company. This was then acquired by the London and North Western Railway, who were keen to gain a foothold in South Wales, where they saw the immense profit potential of the ‘black gold’. They extended it to Merthyr Tydfil. The line opened in 1862 and closed in 1958. It now forms part of the Govilon to Abergavenny Community Route.
The return leg winds along the towpath of the Monmouthshire and Brecon Canal, originally known as the Brecknock and Abergavenny Canal. Built between 1797 and 1812, it represents a remarkable feat of engineering, with over 23 miles (37km) of its total 33 miles (53km) being level, amazing when you think of the mountainous terrain that it traverses. Linking Brecon with Newport and hence the Bristol Channel, the canal was used to transport stone and processed lime from local quarries, including the impressive Llangattock Escarpment, seen easily from the Black Mountains above Crickhowell.
The canal drifted into disrepair by the 1930s but has been restored by British Waterways, with support from the National Park. It was re-opened for leisure traffic in 1970. However, on 16 October 2007, the canal burst its banks near Gilwern, sending a mini-Niagara down into the Usk valley. People had to be evacuated by the emergency services from nearby houses. It was declared that a 16-mile (26km) section of the canal would have to be drained in order for the banks to be thoroughly inspected. The repairs took 17 months and many millions of pounds but the canal was finally re-opened on 29 March 2009. It is now home to several companies that hire out narrowboats, including one which operates Britain’s only fleet of electric narrowboats. These can re-charged at various points along the canal and are proving popular with holidaymakers who prefer a form of propulsion slightly less damaging and distinctly quieter than a conventional narrowboat engine.
A clear tree-covered track runs parallel to the car park. Go through the barrier on to it and turn left. This is now the line of the railway. Follow it beneath a bridge to a residential road and go straight across, around a barrier. Continue behind a row of houses. The path then vaults the canal on a bridge that you should note as it marks the spot where you leave the waterside on the return leg. Continue parallel to the canal for a while, then duck back into woodland, keeping straight ahead at a junction, waymarked right to the canal. The path passes beneath deciduous trees made up mainly of oak, birch and ash. You're likely to see many small birds, especially those of the garden variety, including most members of the tit family, robins and wrens.
About 1.25 miles (2km) after crossing the canal, you'll come to a gate and a car park on the outskirts of the small village of Llanfoist, which grew up on the transport links of the area. Its lime kilns were fed by limestone quarried on the flanks of Blorenge and brought down to the canal by another tramway. Turn right, cross the main road and walk up the lane opposite. This passes the church on the left and climbs steeply up towards the canal. As the lane swings sharply left bear right to climb steps up onto the tow path.
Turn right and continue along the bank, which is particularly beautiful in autumn when the magnificent beech woods show off a full spectrum of autumn colours. After about a mile (1.6km), you'll cross a bridge to continue on the south bank, with some canalside houses taking prime waterfront locations opposite. Shortly after this you come to the Govilon Boat Yard, where an interpretation board maps out many interesting facets of the canal's history. Govilon, like its neighbour Llanfoist, came about because of its position between the natural resources of the mountains and the developing transport network. It was ideally positioned to receive stone from Clydach, which was then transferred to the canal by tram.
Pass the impressive boat club and another attractive waterside building and then, at the bridge, fork left to follow a well-surfaced path away from the canal and around to the right. This path leads back on to the disused railway where you bear left to follow it back into the residential area and on to the car park.
Clear, well-surfaced tracks and paths
Mixed woodland and tranquil canal banks
Family walkways so scoop the poop
AA Walker's Map 17 Brecon & The Black Mountains
Small car park at start, south of Govilon
None on route
Walking in safety
Read our tips to look after yourself and the environment when following this walk.