Update 11am: The woman, who is in a stable condition, is being transported via helicopter to Wollongong Hospital.
Emergency services are responding to a cyclist who was injured at Budderoo National Park on Monday morning.
A 59-year-old female has fallen off a mountain bike and fractured her pelvis.
The incident occurred just before 10am.
The Ambulance NSW helicopter was sent to a meeting place at the junction of Mountain Road and Budderoo Mountain Road, about 5km from where the accident occurred in the bush.
It's understood the cyclist was travelling downhill about 20km/h when the accident happened.
The Mercury also understands that the right side of the woman's helmet took the brunt of the impact.
More details to come.