CNN CNN International April 17, 2015 07:44:00
Volcano because of the proximity of 300,000 people living within a 40-kilometer radius of this very active volcano. it erupted four different time in the last five months. this time shooting ash 3 1/2 kilometers into the atmosphere. look at the footage from that region. can you see what i'm talking about. what you're looking a the now behind us, or at least near a tv screen, is, well, eruption column. that's ash and mixing into the atmosphere, 3 kilometers above. and what you see now is called a pyroclastic flow. that is rocks and ash that tumble down the side of the volcano. this area is know...
Source: archive.org