Work on Auckland's $1.4 billion Waterview Connection is well under way.
One of the world's largest tunnelling machines - nicknamed Alice - is making progress below Oakley Creek on its 2.4km journey from Owairaka to Waterview.
With a cutting diameter of 14.4m, it is the 10th largest machine of its kind ever built.
Take a look at Alice's progress in this stunning timelapse video: