Mt Etna Lava Plumes . ... Located in Sicily , Italy , the volcano produces lava fountains over one kilometer high. ... Etna is not only one of the most active volcanoes on Earth , it is one of the largest, measuring over 50 kilometers at its base and rising nearly 3 kilometers high. Pictured in 2001 May, the tops of two lava plumes are visible near the center of the frame, while hot lava flowing down the volcano is visible on the left. ... NASA Web Site Statements, Warnings, and Disclaimers . ...