Definition of rockfall
: a mass of falling or fallen rocks
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Recent Examples of rockfall from the Web
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The observatory said that a large rockfall into a lava lake in the volcano’s crater on Wednesday triggered an explosion that created a column of ash.
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Sulfur dioxide, rockfalls and explosions are the main hazards, the agency says.
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And changing conditions — such as rockfall that blocks a trail — could leave hikers trapped in the wilderness. Search and rescue efforts, authorities say, would be expensive and dangerous.
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Many of the accidents, the report noted, were preventable, but around 10 percent came from rockfalls.
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There were 58 rockfalls in Yosemite in 2016, which was slightly lower than in previous years, according to the National Park Service.
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Gediman said the slides were not an unusual occurrence in Yosemite, which sees about 80 rockfalls a year, but most do not cause injuries or deaths.
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The park experiences about 80 rockfalls a year, with many going unreported.
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Yosemite documents an average of more than 80 rockfalls a year, but injuries from such events are rare.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rockfall.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of rockfall
1901
Learn More about rockfall
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See words that rhyme with rockfall Britannica.com: Encyclopedia article about rockfall
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