Item could aid search for Vic campers

An item handed into police could be linked to the baffling case of missing Victorian campers Russell Hill and Carol Clay.

Victoria Police said they're examining the item, which was handed in at the weekend, "to determine if it has any relevance to the investigation".

Police would not confirm what the item was.

It is almost a year since the pair went missing at Wonnangatta in Victoria's high country.

On Friday, missing persons squad chief Detective Inspector Andrew Stamper made a fresh plea for assistance, especially to any travellers heading to the state's high country over the long weekend.

Det Insp Stamper said police could not leave any "what ifs" in their investigation and it could not be done without the public's help.

Mr Hill, 74, left his Drouin home on March 19 last year and collected his friend Ms Clay, 73, from her home in Pakenham in his white Toyota LandCruiser.

They then travelled through Licola, spending one night at Howitt High Plains before heading into Wonnangatta Valley on March 20.

Mr Hill was last heard from on that day over HF radio, while Ms Clay had told friends she was heading away and was expecting to return by March 29.