YEAR ago, six areas of the North Wales slate landscape were awarded coveted World Heritage status, to recognise the extraordinary remnants of the once-great Welsh slate industry. How times have changed. When Snowdonia was designated a National Park in 1951, the slate workings in Bethesda, Llanberis and Blaenau Ffestiniog were deliberately left out, believed to be too damaged to be worthy of note. Today, the dramatic quarries are celebrated
