Colville said a Takaka land search and rescue (SAR) team was on stand-by and teams were about to be flown in to the national park on Sunday morning after an earlier search had shown the missing tramper had not spent a night at Boulder Lake Hut, where he was expected to be on Friday evening. He said a check of the Hut’s visitors’ book showed only one tramper had stayed in the hut. Police found the named tramper from the book along the track and established he had spent a night in the hut by himself. It meant that the missing man had possibly either become disorientated or fallen, Colville said, spending both Friday and Saturday night out in the elements, where temperatures fell below zero.