An investigation has found that a blaze south of Dumfries was caused by a controlled burning of heather.
The fire damaged four miles of countryside on Drunburn Hill near Criffel.
More than 60 firefighters, forestry commission workers and even a Royal Naval helicopter was used to fight the fire.
Experts say it will take years for moorland in south west Scotland to recover following a fire affecting more than a thousand acres.
A huge grass fire was burning out of control last night and firefighters from across Dumfries and Galloway were trying to control it