In August 79 AD, disaster struck among the cities surrounding Mt. Vesuvius in Italy. It is believed that the Roman citizens living in that area did not know that the mountain looming above their homes was a volcano, nor did they know that the earthquakes leading up to that day were an indication that an eruption would follow.
When it erupted that day, Mt. Vesuvius eventually sealed everything and everyone in its path beneath 70 feet of lava.