(CBS) — A Naperville woman was injured after falling at Starved Rock State Park Sunday afternoon, according to the Utica Fire Department.

Fire officials say they received a call about a woman falling at around 12:30 p.m. and after arriving on the seen discovered a 19-year-old woman who had fallen between 20-30 feet.

She was conscious and alert when they arrived and was transported via helicopter to Saint Anthony Medical Center in Rockford. Her condition is unknown.