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See also:AVALANCHE (adopted from a See also:French See also:dialectic See also:form, avalance, descent) , a See also:mass of See also:snow and See also:ice mingled with See also:earth and stones, which rushes down a See also:mountain See also:side, carrying everything before it, and producing a strong See also:wind which uproots trees on each side of its course . Where the See also:supply of snow exceeds the loss by evaporation the surplus descends the mountain sides, slowly in the See also:form of glaciers, or suddenly in ice-falls or in avalanches . A mass of snow may accumulate upon a steep slope and become compacted into ice by pressure, or remain loosely aggregated . When the See also:foundation gives way, owing to the loosening effect of See also:spring rains or from any other cause, the whole mass slides downward . A very small cause will sometimes set a mass of overloaded snow in See also:motion . See also:Thunder or even a loud shout is said to produce this effect when the mass is just poised, and Swiss guides often enjoin See also:absolute silence when See also:crossing dangerous spots . |
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