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Kawah Ijen, Banyuwangi, East Java
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Kawah Ijen

Banyuwangi, East JavaJavaNature

A turquoise acid lake and the rare glow of blue fire at night.

Ijen's crater holds one of the world's largest highly acidic lakes, its water a milky turquoise. Burning sulphur gas creates an eerie blue flame visible only in darkness.

Miners still carry sulphur by hand from the crater floor. Visitors hike up before dawn, ideally with a proper gas mask.

Good to know

  • Blue fire before dawn
  • Turquoise acid lake
  • Pre-dawn hike of about 3 km

Planning a visit

Time needed
About 6 h
Best time of day
morning
Relative cost
Medium cost
Effort
strenuous

Editorial estimates. NUSANTARA does not hold prices, tickets, schedules or opening hours — confirm them with an official source.

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