Smoke from a raging mountain wildfire the size of 120 football pitches has been smelled 30 miles away in Cardiff.
The blaze broke out on Mynydd Garnclochdy between Abersychan and Blaenavon in Torfaen on Sunday evening.
More than 40 firefighters are tackling the wildfire on two fronts across 80 hectares of common and pasture land.
A number of properties in the path of the fire are being protected.
The blaze is generating a very large amount of smoke, and South Wales Fire and Rescue Service said it had received numerous calls about the incident from as far away as Caerphilly and Cardiff.
On Tuesday, there were six fire appliances at the scene along with specialist 4x4 vehicles and quadbikes.
The fire was being fought with beaters, knapsack water sprays and leaf blowers.
People living nearby have been advised to keep their windows and doors closed.
Crews were working in challenging conditions due to the terrain, access and the wind conditions, the fire service added.
The "heel" of the fire has now been extinguished but the incident was expected to be ongoing throughout the day.