by Clive Thomas
From here in pre-industrial times the brook continued in its efforts to cut deeply into the country rock, passing Cae Racca, the fields of the Hafod Farm and down into Cwm Rhyd y bedd. Unfortunately with the construction of the new Ivor Works in 1839, this area became the tipping ground of the thousands of tons of waste produced by the furnaces, forges and rolling mills. Over the next century the whole form of the land became radically altered with tip and railway embankment obscuring its course. It eventually emerged into ‘The Cwm’, as a poor remnant of its former self, passing in the mid-nineteenth century the Dowlais Old Brewery and Gellifaelog House on its way down to Gellifaelog Bridge. This had been built in the second half of the eighteenth century to carry the Abernant to Rhyd-y-blew turnpike Road and would eventually become the location which every local would know as ‘The Bont’.
A little below here, it had its junction with Nant Dowlais on the banks of which the first Dowlais furnace had been constructed in 1759. Two centuries later, in the 1960’s with the building of the Heads of the Valleys Road and the general landscaping of the 1980’s the stream’s way through the ‘Cwm’ was again changed quite comprehensively, although shrub and tree planting rendered the valley more aesthetically pleasing. Unfortunately, it is only the archive map or faint ancient photographs which now help inform us of its rich and varied history.
Before being confined to its anonymous, culverted bed, the brook’s surface course from The Bont was once again encroached upon by massive tipping from the Dowlais Ironworks. On the opposite bank, once the fields of Gellifaelog and Gwaunfarren Farms, what was to become Penydarren High Street would be established. This ribbon development of dwellings, shops and places of worship was constructed above the steep valley side here and would eventually form a fundamental link between the growing settlements of Merthyr Tydfil and Dowlais. As early as 1811 though, I.G. Wood’ s print of the Penydarren Ironworks shows our mountain cataract to be already much altered, confined and despoiled by the growth of that iron manufactory. Today, the location is completely transformed from the area of desolation we knew in the 1960’s and ‘70’s. It is landscaped, green and partly wooded but it is a great pity the planners could not have given it a more inspirational name than Newlands Park.
Below the site of the works its course altered a little again and helped define that spur of high ground the Romans had chosen, probably in the early second century AD as the site for one of their forts. I am sure these ancient invaders would have had no inkling of the iniquities that men of later centuries would perpetrate on the stream and landscape hereabouts. Today, Nant Morlais reveals itself only briefly to the rear of the Theatre Royal and Trevithick memorial before disappearing at Pontmorlais, the location of another of those early turnpike bridges.
Hidden behind the buildings of the town’s Upper High Street there is one final reminder of the stream’s rural and unsullied past. Mill Lane, more recently the rather secret location of Mr. Fred Bray’s sweet factory, is the site of a water mill where our agricultural forefathers ground the corn grown in the fields of the local farms.
Whilst the old buildings and general dereliction which not so long ago framed the stream’s last few hundred metres have long disappeared and been replaced by car parking and civic buildings, a large portion of Abermorlais Tip remains to mark the point where the waters of Nant Morlais coalesce with those of the parent Taf. Although partly confined to a subterranean existence, through the more recent efforts of Man, ‘The Stinky’ has been able to rid itself of the foul and fetid mantle of its past.
