The tunnel is dark, damp and a thoroughly miserable place. When a train rattles past outside the noise is deafening. But this tunnel, near Christchurch’s old AMI Stadium, is one of the places Nuku Ngatamariki used to sleep for about two years. He shakes his head, almost in disbelief. ‘How the f*** did everything just turn to s***,’ he says. A CTV series looking at how Christchurch may meet its target of ending homelessness by 2020.