Neil was last seen around Sunday, 8 May, 2022 camping close to Loch Dochard.
He was reported missing to Police Scotland on Monday, 9 May, 2022.
He is described as 5ft 8in tall, with short white hair, a white goatee-type beard and wearing glasses. He was last seen wearing a green jacket and grey walking trousers.
Inspector Lee Page said: “Neil has now been missing for a year and we know what a difficult period this has been for his family and friends.
“Neil was last seen in the Loch Dochard area near Bridge of Orchy on Sunday, 8 May, 2022.
“Sadly, despite extensive police enquiries and searches by officers and our partners, he remains missing.
“We have kept in regular contact with his family during what has been an incredibly difficult time for them and we will continue to support them in any way we can.
“Any new information received will continue to be investigated fully and I would urge anyone with information on Neil’s whereabouts to contact police on 101, quoting reference 3773 of 9 May, 2022.”
