Family members and police are worried about a man missing for eight days.
Nelson police said Jeremy Flatt, 37, was last seen on September 19.
He is of thin build and 1.84m tall.
"It is possible Mr Flatt has entered one of the region's walking or tramping tracks and police are asking anyone who has been tramping in the last week to report any sightings of Mr Flatt," Nelson police said.
Anyone who believed they had seen Mr Flatt since last weekend was asked to phone Nelson police on 03 564 3840.
