SFRS teams faced three-foot high flames across a 600m-long front in the incident between Barrhill and Newton Stewart
Around 15 firefighters used handheld beaters and a high pressure jet to extinguish the flames.
The incident happened between Barrhill in South Ayrshire and Newton Stewart in Dumfries and Galloway on Tuesday afternoon (26 April).
First responders reached the scene shortly before 1:20pm and the fire was brought under control by 6:30pm.
The incident is not thought to have been deliberately started but SFRS is clear it needs the public’s help to reduce the number of wildfires that do strike.
Dry conditions at this time of year can easily result in wildfires that damage the environment, devastate wildlife habitat and threaten homes and businesses.
The public can help prevent wildfires by making sure they dispose of litter and smoking materials carefully while in rural areas.
There are a number of things land managers can do to help prevent wildfires, including strict adherence to the Muirburn Code, which applies to the controlled burning of heather within the permitted season.
Anyone who sees someone acting suspiciously, recklessly or irresponsibly in the countryside should contact Police Scotland on 101.
Information can also be passed anonymously by calling Crimestoppers on 0800 555 111.
Further advice is available on the Your Safety section of the SFRS website, www.firescotland.gov.uk, where links can be found to both the Muirburn Code and the Scottish Outdoor Access Code.
