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Photographer Oliver Grunewald took several stunning photos of the sulfur mines in the crater of the volcano Kawah Ijen that is located in East Java, Indonesia.  X Alison

Photographer Oliver Grunewald took several stunning photos of the sulfur mines in the crater of the volcano Kawah Ijen that is located in East Java, Indonesia. X Alison

Beautiful Ijen, East Java, Indonesia

Beautiful Ijen, East Java, Indonesia

Burning sulfur pouring from the side of the Kawah Ijen volcano — which is part of the Ijen volcano complex in East Java, Indonesia. While the sulfur appears bright red during the day, at night it gives off an eerie blue light with flames that can reach up to five foot in height.

Burning sulfur pouring from the side of the Kawah Ijen volcano — which is part of the Ijen volcano complex in East Java, Indonesia. While the sulfur appears bright red during the day, at night it gives off an eerie blue light with flames that can reach up to five foot in height.

Ijen volcano, known locally as Kawah Ijen, with its 1km wide turquoise-coloured acid crater lake in the centre, home to a labour intensive sulphur mining operation.

Ijen volcano, known locally as Kawah Ijen, with its 1km wide turquoise-coloured acid crater lake in the centre, home to a labour intensive sulphur mining operation.

Ijen Resort, Indonesia. Ijen Resort and Villas is the first luxury hotel in a spectacularly scenic area in East Java, Indonesia. A great place for honeymooners where full privacy, serenity and peace can be found.

Ijen Resort, Indonesia. Ijen Resort and Villas is the first luxury hotel in a spectacularly scenic area in East Java, Indonesia. A great place for honeymooners where full privacy, serenity and peace can be found.

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