Kawah Ijen: The blue fire volcano - What kind of fire burns blue in the dark? How can a lake be more acidic than battery acid? Deep inside Indonesia’s Kawah Ijen volcano, nature creates a spectacle few have ever witnessed. According to Geology.com, the glowing blue flames and acidic waters are real — and far more dangerous than they seem. But what lies beneath the surface of this volcanic giant? | The Brain Maze

4.2K views · 132 reactions | It's our Day 6 in East Java, Indonesia and we hike the Most Acidic and One of the Most Dangerous Lake in the World, Kawah ljen Volcano. Our journey here is one of the most wonderful and mind blowing experience we ever had. #travelstories #indonesiatravel #eastjava #kawahijen | Arcee Xandrah Rain | Facebook

📍Ijen Crater, East Java, Indonesia #volcanohike #hikingtheglobe | Fuel For The Sole Travel, Outdoor & Adventure

19K views · 1.2K reactions | Sometimes it’s good to have the blues  The electric-blue light from the Kawah Ijen volcano in Indonesia is visible only in the darkness. #ParadiseIslands | National Geographic TV | Facebook

40K views · 968 reactions | Trekking up Ijen Volcano in Indonesia is worth it for this view  | UNILAD Adventure | Facebook