Police are appealing for public assistance to help locate missing people Russell Hill and Carol Clay.
It is believed Russell may be with a female companion Carol Clay who is 73 years old from Pakenham.
Carol had told friends she was heading away and was expecting to return home on 28 or 29 March.
Russell left his Drouin home on a touring trip on 19 March and planned to visit various campsites along the Dargo River with his route exiting the region at Dargo on 26 March.
He was making regular check-ins to friends via radio daily between 6 - 6.30pm.
Russell worked in the logging industry for some time and is familiar with the area.
The 74-year-old was last heard from on 20 March via HF radio where he advised he was having radio transmission issues.
Russell was confirmed to be at Wonnangatta Station in the Victorian Alps when he made the call.
Campers found Russell's vehicle with signs of minor fire damage near Dry River Creek Trak at Billabong (Wonnangatta Valley) on 27 March.
Carol had told friends she was expecting to return home on 28 or 29 March and her car, a white 2018 Mitsubishi ASX wagon bearing Victorian registration 1NK 2XK, has not been located.
Investigators have released images of Russell, Carol and a car similar in appearance to hers in the hope someone may have seen them and can provide information regarding their whereabouts.
It is not known what either of them are wearing and it is out of character for Russell not to make contact via the radio.
Police hold concerns for the welfare of Russell and Carol due to the amount of time they have been missing and Russell suffers from medical conditions.
Anyone with information is urged to contact Sale Police Station on 03 5142 2200.
Sergeant Cameron Scott
