Hundreds of motorists sweated in the huge traffic jam and many sat out on the barriers and bankings as temperatures soared to 80 degrees
There was just one almight bang and I knew there had been a crash. There was no sound of brakes or tyres screetching at all.
Police, ambulance staff, doctors and firefighters worked at the scene for more than two hours.
More top news
The road between Ivegill and Durdar is closed following a collision.
A government body has given its backing to transport schemes across Cumbria.
Scotland's Rural College has unveiled a new £800,000 digital classroom at its Barony campus in Dumfries.