This walk runs almost parallel to the busy Heads of the Valley road between Gilwern and Brynmawr although most motorists who pass over it, have no idea of the sights and stories that lie below them.

From the remains of the historic Clydach Iron Works to a garden made of concrete birds and flowers, from iron bridge relics of the industrial explosion to a footbridge linked to the Devil, from Wales' answer to Gretna Green to a cave with a Shakespearean story, this walk is a real gem with something different around every corner.

Footpaths cross abandoned railway tracks and tram roads and the walk even cuts through an old tunnel - although be warned you need a good torch for this part of the route (and possibly wellies) as there is a bend in the tunnel and very little light once you're inside.

The walk also affords views across to Llangynidr Mountain, a popular spot for experienced cavers, as well as a panoramic view of Brynmawr which at a height of 1400 feet is the highest town in Wales.

The area is due to undergo major construction work as the heads of the Valleys road is widened and walkers are worried what impact that will have on this beautiful part of the country.

One of the attractions that caught Derek's eye, the cement garden, is almost certainly soon to vanish as it was the work of a former owner of the house and looks likely to be taken apart now the house has changed hands.

From beautiful Beech forests, to the stunning gorge carved by the River Clydach the area has much to offer walkers, climbers, mountain bikers and bird watchers - not only that but Derek's trail ends with a choice of two pubs!

(This walk was also done as part of the Radio Wales Weatherman Walking series 3 in 2004)