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It seems blind good luck is what's kept a pair of hapless mountain climbers alive.
And it's prompted a strong warning from police.
Another climbing party stumbled across the pair dressed in street clothes including jeans and hoodies near the summit of Mount Ngauruhoe on Saturday night, as bad weather was closing in.
They had no idea how to get off the mountain, sparking a helicopter rescue.
Senior Constable Conrad Smith says it's one of the worst examples he's seen of people not being prepared for the conditions.