By Walid Shoebat Calbuco which just erupted in Chile is what is known as a stratovolcano which is made up of several layers of lava, pumice and volcanic ash. The best-known of all earth’s stratovolcanos are Krakatoa (1883) and Vesuvius which caused the destruction of the sinful city of Pompeii and Herculaneum in 79 AD. […]