University of Canterbury researchers Chris North and Toni Torepe have been working with the New Zealand Alpine Club and Te Rūnanga o Arowhenua to address the issue of how mountaineers dispose of their waste when on Aoraki Mount Cook.
Human waste is currently flown off the sacred mountain, at a cost greater than the income from hut fees.
They join Emile Donovan.
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Chris North (left) and Toni Torepe from the University of Canterbury. Photo: Supplied