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Our transcription: Capable of speeds far greater than creep or slump and even some landslides are mud and debris flows. These flows are often the result of heavy rains saturating the ground in mountainous canyons over time. Because of their viscosity and high density, mud and debris flows can move large objects and be extremely destructive. Finally, at the very rapid end of the mass wasting scale are rockslides and avalanches. In these forms of mass wasting, rocks may travel hundreds or even thousands of meters before reaching a valley floor, and on the way down, they sometimes attain speeds of several hundred kilometers per hour.
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