Things to Do at Ijen Crater

Ijen sits across the strait from Bali in East Java, usually reached via Banyuwangi, and the trek up its crater is built around a genuinely rare phenomenon: blue flames from burning sulfur gas, visible only in full darkness, which means setting off on a steep night hike in the cold well before midnight to reach the crater rim before the sky lightens. Sulfur miners still work the crater floor by hand, carrying heavy loads up the same trail that tourists climb, and passing them on the path is part of the experience whether or not you continue down to the crater floor yourself. Fumes near the vent are genuinely harsh, and a gas mask is a serious consideration, not just a photo prop. Crowds at the main viewing area can undercut the atmosphere in peak season. It's a rough, uncomfortable, early night in exchange for something few volcanoes anywhere offer. Below are the top-rated Ijen trekking tours from Bali and Banyuwangi.