DAVID NUNUK / SCIENCE PHOTO LIBRARY DAVID NUNUK / SCIENCE PHOTO LIBRARY
Waterfall. View of the Shannon Falls cascading down tiers of rocks in pine forest. A waterfall forms when flowing water erodes soft, underlying rock or crosses a fault. The position of the waterfall will gradually move upstream due to erosion at the lip of the fall and undercutting at the foot of the fall. The rate of movement depends upon the hardness of the rock. As the waterfall ages, it gradually loses its height until it becomes a series of rapids. Photographed in British Columbia, Canada.
Model release not required. Property release not required.