Blue Scar is one of Afan 's newest trails .
It 's named for the miners who used to work these hills until the 80s , for whom a nick or cut would heal with a blue tint as the coal found its way in as an accidental tattoo .
Blue Scar is one of Afan 's newest trails and it 's named for the miners who used to work these hills until the 80s , for whom a nick or cut would heal with a blue tint as the coal found its way in as an accidental tattoo .