Powerful though waterfalls may appear, there is a long-standing assumption that they can only form when permitted by other natural forces. Waterfalls are furious cascades of water, sometimes scoring ...

Shoshone Falls, Idaho, USA, was shaped by ancient floods and shifting rivers. Today, it’s one of the largest natural waterfalls in America. Its dramatic setting hides a long geologic story.

Waterfalls are furious cascades of water, sometimes scoring the landscapes in which they flow as they obey gravity’s demands. From Iceland’s shimmering Skógafoss to the family of falls in New ...