An experienced climbing guide fell 20m down a slope while guiding two clients near Aoraki/Mt Cook this morning.
Police said the guide radioed for help after she fell on a moderate slope on Aylmer Col and could no longer bear weight on one of her legs.
Her two clients were uninjured.
The guide was airlifted to emergency services at Mt Cook village for assessment. She was then transported by the Westpac Helicopter to Christchurch Hospital for treatment for a leg injury.
Worksafe New Zealand was investigating the incident.