morning. We're going to go to the serious deck collapse in the water near Myrtle Beach, south Carolina. Vacationers eager to snap pictures of a rainbow found themselves in the middle of a horror... See More
morning. We're going to go to the serious deck collapse in the water near Myrtle Beach, south Carolina. Vacationers eager to snap pictures of a rainbow found themselves in the middle of a horror scene. And Michelle Franzen is here with the latest. Reporter: The group has gathered, ready to mark a happy moment with a photo. When suddenly, the wooden structure gave way. More than a dozen people are recovering after a deck collapse at an ocean front inn in south Carolina. It's horrific. Wood and splinters and nails and a lot of blood. Reporter: Police say about 25 people were on the deck. About 12 to 15 feet off the ground, when it buckled like a trap door. The people on the bottom suffered the most serious injuries. Reporter: That rescue effort, massive in scale. Ten ambulances, six fire trucks, various police and a helicopter were called in. We have injures possibly broken ribs and difficulty breathing. All of the others had broken bones, contusions, sprains and that type of thing. Reporter: Witnesses say the group was trying to take a selfie, against this rainbow that appeared after a thunderstorm right before the deck came crashing to the ground. I was standing there. And all of a sudden, the deck started to collapse. And I jumped quicker than some people did. Reporter: Officials say at least a dozen people were taken to a local hospital to be treated for what they describe as nonlife-threatening injuries. Meanwhile, investigators will be checking out that deck, trying to determine the exact cause. Big questions. Michelle, thank you.
This transcript has been automatically generated and may not be 100% accurate.