More than 40 firefighters are tackling a blaze on a mountain in Gwynedd.
Six fire engines and two off-road vehicles were called to the scene above the A496 in Barmouth after the alarm was raised at about 1245 BST.
North Wales Fire and Rescue Service said the difficult terrain meant water could not be used and fire beaters had helped bring the blaze under control.
The North Wales Police helicopter has flown a fire officer over the scene to monitor the situation.
It is unclear how the fire started.
Six fire engines from Barmouth, Dolgellau, Harlech, Tywyn, Machynlleth and Blaenau Ffestiniog were called out, along with two off-road vehicles. Firty-four firefighters are involved in the incident.
The fire service said an incident command unit from Rhyl had also been called to the scene.
North Wales Fire and Rescue Service attended two further mountain fires in Tan y Bwlch, near Blaenau Ffestiniog, on Sunday afternoon.
Both these fires are now under control.