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Use "rockfalls" in a sentence
"He said the rockfalls were a different issue from Sunday's vehicle accident."
"People residing close to these danger areas are also advised to observe precautions associated with post-eruption activity, such as rockfalls, pyroclastic flows, and ash fallout which can also occur anytime due to instabilities of lava deposited on steep slopes."
"I once got about a third of the way up in a couple of hours when the rockfalls began, so I came back down."