A woman suffered multiple injuries after falling 10 metres down a crag near Richmond.
The incident happened in Low Banks Wood near the River Swale this afternoon.
Volunteer rescuers from Swaledale Mountain Team (SMRT) were joined by Cleveland and Teesdale rescue teams.
The Great North Air Ambulance also attended the incident.
SMRT said the 53-year-old woman slipped and fell around 10 metres sustaining multiple injuries.
Yorkshire Ambulance Service were first on scene and gave medical treatment.
The location of the accident meant that mountain rescue teams were required to evacuate the casualty.
The casualty was stabilised by Yorkshire Ambulance Service and then packaged in a specialist stretchers.
The woman was then carried 300 metres downstream to the waiting ambulance at Green Bridge.
The Great North Air Ambulance also attended.
Steve Clough, SMRT controller, added: “We thank all our partner agencies and wish the casualty as speedy recovery.”