Snowy Hydro, Florence and the sinkhole

Snowy Hydro 2.0 was meant to be a nation building project, supposed to begin delivering green power to the grid by next year.  But the pumped hydro project in the Snowy Mountains of NSW has been up-ended by a single tunnelling machine called Florence that got bogged underground. The mega project was once estimated to cost $2 billion, but is now four years behind schedule and forecast to cost much more. Today, Four Corners reporter Angus Grigg on the mistakes that were made and the billions of taxpayer dollars they’ve cost.  Featured:  Angus Grigg, Four Corners reporter