Deep Stream on the Denniston Plateau offers a spectacular journey into a rare sandstone world slated for destruction. There’s a moment on the track to Deep Stream when you step out of the regenerating bush and onto a vast, undulating expanse of ancient sandstone. It feels like walking on the exposed bones of the land. It’s in the heart of the Buller Coal Plateaux, an uplifted landscape of mineral-rich sandstone pavements. It is also a landscape on borrowed time.