The volcanoes are much more than mere vagaries of nature; they are the only one kind of communication between the earth’s surfaces on which we live in relation to the levels deep of the earth’s crust in the depths of the planet. Although clear, the volcanoes are not so defenseless, along the history of mankind many civilizations have been in constant danger because the volcanoes came in activity expelling large quantities of lava on the earth’s surface. It is noteworthy that then the lava solidifies, becomes like a stone solid, land has been formed in large part of this way. Read the rest of this entry »