Dangerous forces are waiting beneath our planet to wreak havoc on Earth. Explosive eruption of Volcanoes, Earthquakes and Tsunami are some exhibition of devastating power that is lurking under our feet. Some volcanoes are so large that it threatens the existence of Human race. During a volcanic eruption all the energy stored for 100 of years are released in an instance.
Exact number of volcanoes on earth is still unknown. Most volcanoes are created on tectonic plate boundaries, where one plate slides under another plate and melts, causing melted rocks to bubble up into surface and create volcanoes.
The 1980 eruption of Mount St. Helens in Washington was an epic volcanic eruption. The ashes were sent 24 km up to the sky. In 1991 Mount Pinatubo, Philippines exploded and this time ash covered 35 km of atmosphere.