This is a red volcanic stone. Volcanic stones and rocks are formed from lava erupted from a volcano. Volcanic rocks are among the most common rock types on Earth's surface, particularly in the oceans. On land, they are very common at plate boundaries and in flood basalt provinces. It has been estimated that volcanic rocks cover about 8% of the Earth's current land surface. Mount Etna is one place where volcanic rocks can be found. Mount Etna is an active stratovolcano on the east coast of Sicily. It is located above the convergent plate margin between the African Plate and the Eurasian Plate. It is one of the tallest active volcanoes in Europe with a current height of 3,357 m. Mount Etna is one of the world's most active volcanoes and is in an almost constant state of activity. The fertile volcanic soils produced from this activity support extensive agriculture, with vineyards and orchards spread across the lower slopes of the mountain and the plain to the south.