Brunost tonnes of brunost caught fire in the long Bratli tunnel in Tysfjord. The temperature increased so much that the Brunost caught fire, the fats and sugars in the cheese fuelling the blaze, making firefighters unable to approach it until four days later, when most of it had burned out. The tunnel was severely damaged, and was closed for repair for several months afterwards. The accident was widely publicized in international media, and was dubbed "the goat cheese fire". It was likened to the 1999 Mont Blanc Tunnel fire, when a truck carrying margarine and flour caught fire. Brunost Brunost ("brown
Summit Tunnel fire top of the shaft. Unable to get close enough to safely fight the fire directly, the fire brigades forced high-expansion foam into ventilation shafts far from the fire. This created blockages that starved the fire of oxygen. By mid-afternoon the next day, the inferno was no longer burning, though the fire was by no means knocked down. Petrol continued to leak from the derailed wagons through the tunnel drainage and ballast and the vapour sporadically reignited when it came into contact with the hot tunnel lining. Two hundred people were evacuated from their homes and workplaces in Walsden in response.