More than 50 firefighters are battling a large wildfire that has burned across the Cairngorms National Park for three days [1].

The blaze threatens a significant portion of the UK's largest national park, requiring aerial support to contain the flames in difficult heathland terrain.

Emergency crews are focused on the area near the village of Nethy Bridge, where the fire first ignited in the heathland [1]. The fire front now extends across nearly four miles [3]. To combat the spread, two helicopters are continuing to water-bomb the site [2].

An area commander is currently overseeing the operation. The commander said there are "adequate resources" on the scene to manage the incident [4].

Ground crews are working alongside the aerial support to create breaks in the vegetation, and prevent the fire from expanding further into the park's protected landscapes. The operation remains active as crews monitor wind conditions and fuel loads in the surrounding heathland [1].

The fire front now extends across nearly four miles.

The use of water-bombing helicopters and a large contingent of ground personnel indicates the challenging nature of the terrain near Nethy Bridge. Because the fire is situated in heathland, the fuel source is highly flammable, making containment difficult and necessitating a coordinated aerial and ground response to protect the national park's biodiversity.