The fire broke out at Dunwich Heath in Suffolk at around 5.30pm on Wednesday, prompting a major incident declaration. The National Trust site will remain closed throughout Thursday. A spokesman said: "Dunwich Heath will be closed today as we assist fire crews with a large wild fire in the area. READ MORE: Live updates as 90 firefighters tackle major heath fireThe fire spread across the heathland despite the efforts of 90 firefighters who worked through the night to contain the blaze. Specialist equipment, including quad bikes, was used to tackle the fire, and drone technology was used to assess fire behaviour and support operational decision-making.