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Scaling 2,000m peaks to reach deadly craters, these are the brave workers who risk their lives every day mining toxic sulphur from inside live volcanoes.
The hardy miners on the Ijen volcano in Indonesia spend 12 hours a day surrounded by acid-filled lakes and rasping toxic smoke in the hell-on-earth environment.
Many of the 200-strong workforce appear to risk their lives by wearing very little safety equipment as they descend into the unforgiving environment.
Their work is made even tougher by their miniscule wages of just £3 a day.
British photographer Mark Taylor, 48, travelled to Indonesia to see for himself the extreme conditions the miners face.
Tough: A group of the sulphur miners, who work for 12 hours straight for just £3 a day (Caters)He said: "If you looked up you could see the gas, at some stages it was thick enough to block out the sun.
"Once we were at the top and climbing down you could see the men were not wearing much safety equipment.
"Some had ramshackle masks and others just had scarfs or shirts wrapped around their faces."
Workers descend into the sulphur-rich volcanoes and hack away at the walls to collect the hardened mineral.
The volcano contains toxic and potentially fatal fumes, but the work has to be completed to satisfy the demand for sulphur from oil and detergent companies.
They often start work having hiked thousands of feet up to the top of craters brimming with a deep lake of molten sulphuric acid.
