Europe's tallest active volcano is Mount Etna, located on the east coast of Sicily, Italy. It is an active stratovolcano with a base diameter of approximately 25 miles and an elevation of 10, 922 feet. Etna is one of the most active volcanoes in the world and has been erupting since 1500 BC. Its eruptions have caused significant damage to nearby towns and villages, but it is also a popular tourist destination. The volcano is also known by its four-letter acronym, ETNA.