Fire fighters battle blaze on Killowen mountain in Co Down
Two crews from the Northern Ireland Fire and Rescue Service fought the flames on Friday.
It is understood to be a large gorse fire.
TUV councillor Henry Reilly describe the blaze as so fierce, it "looks like lava flow".
He voiced concerns that high winds on Friday night were fanning the flames and helping it to spread more quickly.
A spokeswoman for the Northern Ireland Fire and Rescue Service (NIFRS) said the fire was not threatening homes or property in the area.
Belfast Telegraph Digital