aerial view of pontsarn viaduct near morlais and merthyr tydfil in south wales. the viaduct is now part of the taff trail walking

above aerial arch architecture beacons beautiful brecon bridge britain countryside cycle drone famous fechan forest green historic historical landmark landscape merthyr nature old outdoor park pontsarn railroad railway river route rural scenic south stone summer taf taff tourism trail transportation travel trees tydfil valley viaduct victorian view wales welsh