Very few people know what it was like to live and work in a lighthouse, stationed in the outermost reaches of the country, tasked with keeping a lifesaving navigational aid alight.
However, the hardy ones who do will have some unique working memories.
It was growing up surrounded by such experiences that inspired photographer Conor Gault to begin a mammoth project to meet and photograph all the living former Northern Lighthouse Board (NLB) keepers.
Such people are now hard to come by, after the completion of an automation programme in 1998.
Instead of a team of lighthouse keepers keeping the lights on in remote coastal locations, the automation meant the beams were instead controlled from a nerve centre in Edinburgh.
Technicians go out to maintain and check them throughout the year and fix any faults.
Conor's grandfather Bill Gault, who is now 83, worked with the NLB as a keeper for more than 30 years.
He was stationed at many remote points of Scotland, including Muckle Flugga in Shetland, Skerryvore in Tiree, and Fair Isle South.
His many duties included maintaining the lights and the lighthouse exterior.
