Giant avalanches on an icy moon of Saturn may provide clues about devastating landslides on Earth, say scientists.
Images from the American space agency Nasa's Cassini spacecraft revealed 30 massive ice falls on Iapetus, a walnut-shaped moon girdled by steep 12-mile high mountains.
In 17 cases the avalanches plunged down crater walls, while another 13 swept down the sides of the equatorial mountain range.
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