BY IAN CROUCH
Emergency services have been called to a serious a multi-vehicle crash at Glen Oak.
It's understood 3 cars collided on Clarence Town Road just before 7.00anm on Monday.
NSW Ambulance says the drivers of two of the cars suffered minor injuries but a woman driving a third car was trapped after her vehicle collided with a tree.
It took about an hour to free her from the wreckage.
She's being flown to hospital in a critical condition by the Hunter's Westpac Rescue Helicopter.
