Authorities say the woman, who is in her 30s, was injured when the four-wheeler wrecked about 9:00.
She was airlifted from the scene to Gwinnett Medical.
The accident happened near Gillsville in the Magnum Mill Road/Harmony Church Road/Pineview area. Authorities say the injuries appeared serious and add that she was not wearing a helmet.
http://accesswdun.com/article/2009/9/223021