Fire crews have been rushed to tackle a blaze on Ben Lomond.
One fire engine is currently in attendance on the west slope of the munro near Loch Lomond after being alerted around 2.15pm on Tuesday, March 22.
Alarming footage shows the 974-metre high mountain engulfed in smoke as clouds billow into the sky.
It is currently unknown if there are any injuries as a result of the blaze.
The Ben Lomond Ranger Service has said the fire was "probably cause by one dropped cigarette".
Posting a clip on Facebook, they said: "The fire is along a 1km front, all probably from one dropped cigarette.
"It is going to take a lot of work to put out. Please share to spread awareness of the need to take care with cigarettes."
The Scottish Fire and Rescue Service (SFRS) confirmed they are in attendance.
A spokesperson said: "SFRS were called to a fire on the west slope of Ben Lomond at 2.15pm on Tuesday, March 22.
"One fire appliance is currently in attendance at this moment."
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