Jess Phoenix’s career as a volcanologist and science consultant has taken her around the world. She earned a bachelor’s ...

In an overnight trip from Bali, you can have an otherworldly experience by hiking through blue flames up an Indonesian ...

Ijen forms part of the Ijen UNESCO Global Geopark, which is comprised of Mount Ijen, the active volcano with its turquoise crater lake called Kawah Ijen, the most acidic lake in the world.

For over 40 years, miners have been extracting sulphur from the crater of Kawah Ijen in Indonesia. To double their meagre income, the hardiest of these men work nights, by the electric blue light ...

Indian travel vlogger Isa Khan has mesmerized the internet with a breathtaking glimpse of Indonesia’s Ijen Crater, where an extraordinary blue fire illuminates the night. Shared on Instagram ...

What makes Kawah Ijen truly unique is the hyper-acidic, turquoise lake found in its crater, says Delmelle. At about 3,000 feet in diameter and just over 600 feet deep, it’s the largest natural acidic ...

Mount Ijen in East Java, Indonesia, is an active volcano that contains an acidic lake and a sulfur mine. Deep in the crater, in air heavy with toxic gases, miners extract chunks of sulfur.

Kawah Ijen Crater Lake, at the top of the volcano, is the world's largest such body of water filled with hydrochloric acid. In fact, it's the acid that makes the water green.

Kawah Ijen, the volcanic crater lake, in Indonesia’s eastern Java, is where miners go in search of sulfur, Oct. 28, 2014. Luca Catalano Gonzaga—Witness Image ...

Wu took photos at Kawah Ijen and Mount Bromo a few hours away. "It was a holiday, but it was also quite a committed photo project for me at the same time," he says.