This route starts at the the site of an early iron working forge and follows the former tram road which hugs the side of the hill to the Pwll Du limestone quarry.
The route is within the Blaenavon World Heritage Site and also overlooks the Usk Valley. The majority of the route is level and well surfaced. There is a steep drop on one side of the path, which is unfenced, until you reach the quarry. There is a 20 metre long, 1:6 slope and a rocky step down to a stream crossing. More details and photos can be found on the National Park website.
How to get there: Garnddyrys Forge is alongside the B4246 between Govilon and Blaenavon. The quarry is signposted from the road and is 1 km north of Keepers Pond (see no: 38).
Nearest town or village: Govilon or Blaenavon.
OS Grid Reference: Explorer Map OL13 or Landranger Map 161 - Grid Reference for the start of the walk: SO 258 118.
Distance: Up to 2.5km there and back.
Facilities: Other than local pubs within a mile, the nearest facilities are in Abergavenny or Blaenavon.
Parking: Roadside parking is available next to the crash barriers. The path is accessed down a sloped stone/grass track.
Toilets: The nearest toilets are in Blaenavon or Abergavenny.