A 20-kilometre wide caldera housing the world largest highly acidic turquoise lake and rare 'blue fire' electric flames caused by ignited sulphuric gas; the landscape is a visceral contrast of neon-yellow sulphur deposits and charcoal-black basalt; descend the crater wall at 3 am with a respirator; the sound of hand-hammers clinking against rock and the sight of miners carrying 80-kilogram loads define the brutal; elemental environment.
About Ijen Crater
A 20-kilometre wide caldera housing the world largest highly acidic turquoise lake and rare 'blue fire' electric flames caused by ignited sulphuric gas; the landscape is a visceral contrast of neon-yellow sulphur deposits and charcoal-black basalt; descend the crater wall at 3 am with a respirator; the sound of hand-hammers clinking against rock and the sight of miners carrying 80-kilogram loads define the brutal; elemental environment.
Why Visit
Ijen Crater is one of Indonesia's defining sites — a place that rewards every visitor differently.
Insider Tips
- 1
Ijen Crater is best explored on foot — take your time and soak in the atmosphere.
- 2
Visit at different times of day for a completely different perspective.
- 3
Combine your visit with nearby attractions to make the most of your time in Indonesia.





