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
A look ahead at the forecast for the Border region.
The museum has been granted £635,000 of lottery money to expand the existing Jim Clark Room.
The video sees Mark Beaumont pass some of the region’s most recognisable attractions, activities, and landscapes.