It is the natural world’s version of painting the Forth Bridge.
Volunteers have spent a decade maintaining the paths on Schiehallion but the body which looks after the mountain has now called in expert help.
The John Muir Trust says that Blairgowrie-based footpath specialists Upland Access will tackle some of the more complex repairs.
Trust spokesman Chris Goodman said the poor state of the paths was resulting in damage to other areas of the mountainside.
“The path had become more worn and rough over the years and, because of the wearing down of the surface on parts of the path, gaps between some of the original steps had become wider, making them more difficult to ascend,” he said.
“When this happens, people tend to walk along the short grass and heather that runs along the side of the path. This, in turn, leads to the path itself becoming wider and more obtrusive.
“It can also destroy the surrounding vegetation. We’re confident that with these repairs walkers are less likely to stray off the established footpath and it’ll be easier to keep it in tip-top condition.”
Upland Access gave two regular volunteers, James Brownhill and David Harris-Burland, the chance to work with the professionals and learn some of their specialist techniques.
Mr Brownhill said: “They work fast but also to a really high standard.
“I’ve looked forward to working with the professionals for some time, and the two days were beyond my expectations.”
Matt McConway, who runs Upland Access, added that he was impressed with the commitment and enthusiasm shown by the volunteers from the John Muir Trust.