POLICE are seeking help to find missing Durham Lead man David Lansdown.
The 51-year-old was last seen on December 19 at Durham Lead, outside Ballarat.
Police investigating his disappearance have been told he bought supplies from a supermarket and has been travelling in white 1995 Mazda Bravo.
They believe he travelled through the Northern Territory and South Australia and may still be in that area.
They are concerned for his welfare, as Mr Lansdown suffers from a medical condition and did not take his medication with him.
He is described as being about 185cm tall, of solid build, with black and grey hair and a beard.
He has a distinct scar on his forehead.
Anyone who sees David is urged to call triple zero (000) immediately.