Avalanches!

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Across
  1. 1. Worlds deadliest avalanche
  2. 3. Can kill people
  3. 4. Big rocky formations
  4. 6. Causes lots of damage
Down
  1. 1. Similar to a landslide and destructive
  2. 2. Avalanches are really __
  3. 5. If the mountains are __ snow can slide down