Searchers have been looking for a camper missing from the mountains around Lake City since Friday.
He's a 63-year-old from Oklahoma and is believed to have been camping in the area by himself. A passerby noticed that he hadn't returned to his campsite.
Searches over the weekend didn't turn up any clues about what happened to him.
Searchers say the man is experienced and they're optimistic they'll find him in the rugged terrain.