Have you ever been in a flash flood? Here is a terrifying 12-minute video of four adventurers who were canyoneering in Zion National Park and got caught by a flash flood forming waterfalls over the side of the canyon. They were not watching the radar carefully and they thought they would be safe where they were. But misjudging the weather nearly cost them their lives. You can watch the video from Outside here. The lessons–be safe and watch the weather carefully!
