Frank Slide, where giant rockfall occurred in 1903, limestone debris fell 400m, Alberta, Canada, North America

Rockfalls from red and white chalk cliff, Hunstanton, Norfolk, England, United Kingdom, Europe

Frank Slide (massive rockslide of limestone from Turtle Mountain that buried town in 1903), Crowsnest Pass, southern Alberta, Rockies, Canada, North America

A truck heading into Taroudannt province, on a mountain road in the Atlas mountains of Morocco, North Africa, Africa

The massive 1991 Randa landslide below Zermatt, Switzerland, Europe

A rock fall on Ben Starav in Glen Etive, Highlands, Scotland, United Kingdom, Europe

A rock fall on Ben Starav in Glen Etive, Highlands, Scotland, United Kingdom, Europe