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A massive dry fracture has just opened on Mount Etna -- and scientists are now raising the alert level. This newly discovered fissure on the southeast wall is not releasing lava, but that doesn't make it safe. In fact, this type of "silent cracking" is often a sign of deep internal pressure, structural movement, or early-stage volcanic instability. In today's Geology Watch report, we break down the footage shared by Pio Andrea Peri and the latest update from INGV, which has now issued an F1 Alert Status -- indicating a high probability of lava fountains and increased volcanic activity at...

Jakarta, Indonesia (CNN)Mount Semeru, a volcano on Indonesia's East Java Province, erupted on Saturday, spewing a column of smoke and ash while displacing thousands from the area, authorities said. The eruption has killed at least one person and wounded 41 others, Indah Masdar, deputy head of Lumajang District, said in a press conference held in Jakarta. Budi Santosa, Head of Disaster Management of East Java Province, said earlier on Saturday that two sub districts had been "badly affected" by the volcano's eruption.