1 of 11
Baffin Island Waterfall
A waterfall fed by glacial runoff tumbles over sheer cliffs and into the turquoise water of Admiralty Inlet on Baffin Island, Nunavut, Canada. Such moving water is among the most powerful of nature's landscape-altering tools.
Photograph by Paul Nicklen

Erosion and Weathering

See weathering and erosion photos in the Weathering and Erosion Gallery from National Geographic.