Do you know what a volcano is? I guess you all know volcano is a mountain with magma inside it. Most volcanoes are formed on land, but there are volcanoes that are on the ocean floor. In Indonesia, there is Mount Merapi and Mount Krakatau. Mount Merapi erupted on October 2010 and Mount Krakatau erupted in 1883. The eruptions were really massive and destructive. Do you want to know how is the volcano erupting? Well, let me explain to you.
What is the general statement of the text?