Braemar Mountain Rescue Team are searching for a 61-year-old hillwalker who has not been seen by his family for a week.
James Robertson is described as being five feet ten inches tall, medium build, with short grey hair and wearing glasses.
He is believed to be carrying a rucksack.
Police Scotland said that Mr Robertson has not been seen since leaving his home address in Cathcart, Glasgow on Monday 29 February.
He is understood to have travelled to the Cairngorm area to hillwalk and mountain rescue personnel are searching the area.
Speaking on social media, Lynn Strachan, Mr Robertson’s daughter, said: “It may seem useless but it only takes one person to come forward to confirm they’ve seen him on the Cairngorms to help Braemar Mountain Rescue focus their search.
“We are desperate for him to be found.”
Anyone who may have seen James is asked to contact Police Scotland on 101.