Imagine relaxing in your beach lounger on your favorite beach when…KA-BOOM…a loud, strong explosion sends you hurling through the air. That’s exactly what happened to a 60 year woman at a Rhode Island beach. She suffered some broken ribs and a concussion after landing on near by rocks. Here’s the freaky part. After 2 days of investigating, authorities still have no idea what caused the beach blast. They have ruled out any kind of explosive device. There are no gas lines running through that area. So what cause the blast described as being as loud as a sonic boom? Watch the video then tell us what you think caused the explosion.