Ijen Volcano is a 2,600-meter-high volcano located in eastern Java, Indonesia.
The blue glow of the burning sulfur is reminiscent of a dark utopia created by nature.
At the same time, there are about 100 workers working around the clock to extract the sulfur.
Every day, the workers, ranging in age from 18 to 60, manually carry 70 kilograms of sulfur from the volcano's crater, which is filled with poisonous volcanic gases, to the trailhead without wearing gas masks.
Not only that, but many of them lose their lives when they step off towering cliffs.
The sulfur they risk their lives to carry is worth only 4 US dollars, but many workers are still heading for the dangerous volcano today.
This is a true record of the people who live there.