How are microorganisms able to survive in the Cave of Villa Luz's harsh environment?

Microbes are able to survive in the harsh environmental conditions of Villa Luz case because they have ability to utilize higher amounts of methane, ethane and propane available to produce energy. microorganisms found in this areas with harsh environmental conditions such as Luz cave are referred to as extremophiles. in addition, these microorganisms have the ability to use hydrogen sulphide to synthesize energy and in the process they release highly corrosive sulfuric acid.