Funny story...I did an 8 hour Adventure Race last month in the Blue Ridge Ga mountains which consisted of hiking/trail running, orienteering, cycling and kayaking. Anyways, as my partner and I were bushwhacking up a mountain, I alerted him that he just stepped over a snake. He immediately jumped and yelled 'copper head' in which I laughed and told him it definitely wasn't a copperhead. I picked up a stick to nudge the snake and get a better look. The snake immediately puffed up his head area which my friend yelled 'it's a f**** Cobra!!'
....after doing some research, it looks like we stumbled on a common eastern hog nose which was one of the many highlights over the long day.