Meet the sulfur miners at the Kawah Ijen.
These people go each day 3 km up Ijen Gunung (the Ijen volcano), and down in the crater (Kawah), to return with 60 to 100 kilograms of sulfur on their shoulders. Some do it twice a day. All of that for about 8 Euro-cent per kilogram.
Average life expectation is about 40 years.