Volcanoes are mother natures way of releasing stress. By plate tectonics coming together called Convergent fault. They will create a mountain, then releasing the tension in the earth. Mountains can provide fun and enjoyment. This can also be a disaster, because the mountains were formed  by tectonic plates. That means that the mt. could erupt at any time.
     Volcanoes erupt around the tectonic plates. Tectonic plates are large pieces of land. they are above the mantle and under the crust. Volcanoes are unpredictable, so are the tectonic plates, plates can move and make the volcanoes erupt. When volcanoes erupt the hot spots release the magma and that is when we call the magma, lava.
Volcanoes rare in the world they only appear to erupt every 17 and a half years. in conclusion you should not fear mts. but be cautious around them you do not know when they will take action against you.

  Volcano #1
Volcano #2
   Hazards of the eruption
Causes of the eruptions