Injured girl rescued from bushwalk after terrifying night in the open

An injured teenager who spent the night at a national park on the NSW Central Coast has been airlifted to hospital.

The 15-year-old girl spent a terrifying few hours in horrific conditions with paramedics after hitting her head on a walking track during a school camping trip to Brisbane Water National Park on Sunday afternoon.

It was feared the girl had suffered spinal injuries.

The awful weather conditions hampered efforts to safely extricate the teenager but with the help of NSW Police, the teenager was winched out at around 12.30pm.

She has been taken to Westmead Children's Hospital in a stable condition.