CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )
CATANIA, ITALY - APRIL 2: Lava flows from a fracture at the base of southeast crater of Volcano Etna as its eruption activity continues on April 2, 2017 in Catania, Italy. Until now, lava flow has dropped down for kilometers reaching an altitude of 2300 meters. Mount Etna, Europe's largest active volcano, erupted twice in march, spewing lava hundreds of feet into the air. ( Salvatore Allegra - Anadolu Agency )