molten

The Ijen group of volcanoes in East Java, Indonesia, features a popular tourist destination called the Blue Fire Crater. Molten sulfur and sulfuric gas emerge from cracks in the crater, causing large blue flames and streams of glowing blue "lava."

Chicago-based photographer Reuben Wu visited the volcano last month, capturing both its majesty from afar and its mesmerizing blue flows from up close.

Back in May, we featured the volcano photos of photographer Miles Morgan, a guy who gets so hot to lava that he's had his shoes and tripod melt. If you didn't believe that shoe melting fact then, check out the crazy photo above: it shows photographer Kawika Singson with his shoes and tripod in flames due to the intense heat of lava.