Natural gas fields are areas where natural gas, a fossil fuel, is found underground. These fields are often located in sedimentary rock formations and can be discovered through geological surveys and drilling. Natural gas is primarily composed of methane and is used for heating, electricity generation, and as a fuel for vehicles. Extraction of natural gas from these fields involves drilling wells to bring the gas to the surface. The process can include techniques like hydraulic fracturing, or fracking, which helps release gas trapped in rock formations. Natural gas fields play a crucial role in the global energy supply and economy.