High winds swept across the set Monday and blew apart the lunch tent just as everyone was settling down to eat.
The coastal area has been battered by strong winds caused by the tail of Hurricane Katia crossing the Atlantic and, although the weather was fine Monday morning, conditions started to deteriorate around noon.
A worker on the set told the 'Belfast Telegraph' that production had been called off for the day and everyone was moved to the catering tent to eat. Then it collapsed. "It all happened so quickly. The floor started to come up, then the side rose up, the roof took off and beams starting falling down. ... It was definitely a bit more drama than we were expecting."
According to a BBC source, "It was very sudden and there was mass panic. People had to crouch under tables to protect themselves. They thought they were going to die. The structure just wasn't able to withstand the strong winds."
A spokeswoman for the local healthcare trust said four men and one woman were treated at the Causeway Hospital and then discharged. Local councillor Padraig McShane said people working as extras on the set were taken to a local hostel before being brought home on buses.
"Unfortunately, the marquee was victim of the bad weather and some people were injured," he said. "Thankfully nobody was seriously hurt, but a lot of people are still in shock."
Production on Season 2 of 'Game of Thrones' got underway in July with Northern Ireland standing in for the Frozen North, and many of the external scenes are being filmed on the exposed coast, close to Carrick-a-rede Bridge.
It's been estimated that the drama series has created around 800 jobs in the local area, ranging from actors and technical staff to landscape gardeners and hairdressers, and that it's generated around $19 million in direct spending in Northern Ireland.