Md Sahil on Instagram: "Indonesia 's blue fire phenomenon, known locally as Api Biru, occurs at the Kawah Ijen volcano in East Java, Where sulfuric gases ignite as they emerge from volcanic cracks, creating mesmerizing electric - blue flames visible at night, often mistaken for lava but actually burning sulfur. This rare spectacle is caused by sulfur combustion at high temperatures ( up to 600°C ) and requires a challenging night hike, with the best viewing times between 2-4 AM before sunrise, o