Sand And Rock Mining In Merapi Volcano Slope

Mine workers rest area shelter sand mining rock mining Srumbung sub-district Magelang Central Java December 17 2025 disaster-prone area safety concerns environmental damage Mount Merapi national park disaster threat villages cold lava flow hot clouds eruption vegetation loss natural barrier economic pressures mining activities Aditya Irawan NurPhoto worker safety environmental impact volcanic activity natural disasters economic necessity mining risks habitat destruction Central Java mining volcanic eruptions disaster management.