My friend told me about seeing massive rocks flying through the air; it sounded pretty dramatic to witness a major rock "fall" like that.
Also, while skiing in the mountains, we saw a huge "avalanche" where snow and ice mixed with rock fell and tumbled rapidly down the hillside into the adjacent valley.
The news reported a large amount of non-water saturated material moved downslope along a particular plane and deposited at the valley bottom, where it temporarily dammed a river. That's the third "Landslide" reported this week following some heavy rains.
The "Debris Flow" moved from the volcano's flank down into the valley and deposited rock and debris that buried infrastructure much like when a river floods its floodplains.
Hence, in this case, it is concluded that the current answers are Falls, Avalanche, Landslide, and Debris Flow.
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