A helicopter carrying water from the Llandegla reservoir is to help extinguish a mountain blaze near Llangollen, fire chiefs have said.
Crews from Ruthin, Johnstown, Wrexham, Rhyl, Bala and Buckley, narrow access vehicles from Llanrwst, Llangollen and Denbigh, two wild fire vehicles from Abergele and one from Corwen are tackling a blaze in Rhewl, near to Llangollen, which started at about 1pm on Tuesday.
The incident involves approximately 600 square metres of gorse, undergrowth and forestry, the fire service said.
People are being urged to to avoid the area.
A fire and rescue service spokesman said: "Fire crews are working with colleagues from Natural Resources Wales, Denbighshire Wardens from Denbighshire County Council, North Wales Police and the 4 x 4 volunteer group to bring the incident under control.
"A helicopter will be attending the incident shortly and will be carrying water from the Llandegla reservoir to help extinguish the fire.
"Please avoid this area whilst crews are dealing with the incident – if you are out walking do not walk through the smoke.
"If you can smell smoke please close your windows and doors."
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