See

Ijen Crater

Kawah Ijen

Photo: Sémhur (talk), CC BY-SA 4.0 via Wikimedia Commons

About

It's famous for its blue flames and stunning sunrise views. It can be approached from Bondowoso in the west or Banyuwangi in the east. Both come together at the parking, from where you can go up to the crater. Neither road is good, but the Bondowoso route is easier. The trip can be done during the day or night (departing around 01:00). The latter is the popular choice as that's the only time the "blue fire" can be seen.

The Ijen volcano complex is a group of composite volcanoes located on the border between Banyuwangi Regency and Bondowoso Regency of East Java, Indonesia. It is known for its blue fire, acidic crater lake, and labour-intensive sulfur mining.
From Wikipedia · Ijen

Map of Ijen Crater

Sources and licences

Guide text adapted from the Wikivoyage article "Ijen" by its contributors, available under CC BY-SA 4.0. Read on Wikivoyage · Contributors · CC BY-SA 4.0
Summary from the Wikipedia article "Ijen", available under CC BY-SA 4.0. Wikipedia
Photo: Sémhur (talk), CC BY-SA 4.0 via Wikimedia Commons

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