A girl was taken to Sheffield Children's Hospital after hurting her back jumping into a rock pool.
The 12-year-old was playing near to the area known as Slippery Stones in the Upper Derwent Valley when she jumped into a rock pool and hurt her back.
Members of Buxton and Edale mountain rescue teams helped East Midlands Ambulance Service paramedics at the scene.
She was carried on a stretcher to an air ambulance and was flown to hospital.
A Buxton mountain rescue team spokesman said: "The Buxton and Edale teams' joint snatch squad was called to support the East Midlands Ambulance Service on Monday afternoon following a report of an incident at Slippery Stones in the Upper Derwent.
"We located a 12-year-old girl with back injuries sustained whilst jumping into a rock pool in the River Derwent, north of Slippery Stones.
"She was treated on site by team members and ambulance service paramedics, packaged and loaded onto a mountain rescue stretcher and carried to the Derbyshire Leicestershire and Rutland Air Ambulance which had land some distance away due to the steep terrain."