A closer look
Giving yourself a minor respiratory injury is a small price to pay for an aesthetic midnight photo of electric blue fire. Tourists wake up at midnight to scale Indonesia's Kawah Ijen volcano, strapping on gas masks to descend into an active crater billowing lethal sulfur dioxide. The prize for this lung-searing hike is watching liquid sulfur ignite at 1,112 degrees Fahrenheit, creating the illusion of glowing blue lava pouring down the mountain.






