Daily Overviewのインスタグラム(dailyoverview) - 10月21日 05時10分

Kawah Ijen is a stratovolcano in the East Java Province of Indonesia. It has a 0.6-mile-wide (1 km) turquoise-colored acidic crater lake, which is the site of a major sulfur mining operation. At night, when sulfuric gases make contact with fresh air, electric blue flames can be seen rising from volcano up to 16 feet (5 m) high. /// Created by @Daily Overview, source imagery: @digitalglobe

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