High up in the East Java region of Indonesia, the Ijen volcano is a site of both magnificent beauty and treacherous working conditions.
Stretching across a width of 1km (3,280ft), a bright turquoise lake draws traveling Instagrammers from across the world to capture its splendor in the rising sun. Though beautiful, the lake contains some of the most acidic water on the globe as a result of sulfur present in the volcanic gas.
As part of a laborious mining operation, workers break apart the cooled sulfur by hand and then carry the 70-90kg (165-200lb) baskets up the steep crater rim before embarking on a 3km (1.86mi) hike to their destination in the Pultuding valley. To view more photos and videos from the Ijen crater lake, tap the blue location text above. Photo by @robiatfahlevie