The crossword solutions for the term ETNA OUTPUT are ASH (3 letters), LAVA (4 letters), and MOLTENLAVA (10 letters). Mount Etna is an active stratovolcano located on the east coast of Sicily, Italy. It is the highest active volcano in Europe and is one of the most active volcanoes in the world. The output of Mount Etna includes ASH, LAVA, and molten LAVA. ASH is a type of fine-grained material that is ejected from a volcano during an eruption. LAVA is molten rock that is expelled from a volcano during an eruption. Molten LAVA is a type of LAVA that is still in a liquid state.