Is this lightning struck or something? It came off the Clinchfield Railroad in Spartanburg, SC. I have the one that was next to it on the pole and it is untouched. It could be a manufacturing error or something? I would love hear the responces. Thank You! Jeffrey

Thank You Paul! A lightning strike struck near this insulator and caused it "Flash Burn". High voltage flashed over the glass and struck here. Luckily this guy survived the strike! Cool!