Forsyth County Fire Chief Jason Shivers said rescuers battled darkness as they tried to reach the two, and located the father and son by tracking a cell phone signal off Old Atlanta Road in the Suwanee area Monday evening.
Rescuers said they started CPR on 44-year-old Jeffery Lane McBryant of Cumming, but he was pronounced dead at the scene.
Shivers said that his teenage son, whose name wasn't released, was taken to Northside Hospital-Forsyth with non-life threatening injuries.
Investigators estimated the two fell between 15 and 20 feet to the ground.
http://accesswdun.com/article/2012/11/255624