Oil and natural gas is the most important mineral, oil fields are located in three areas:1- The largest field is in Kerkuk, the underground reservoir stretches from nearby Erbil in the north to Tuz Khurmatu in the south.2- Sasan and Eyn Jaleh, Batma fields, located north of Telafer to the west of the Tigris River3- Neftkhana field located on the Iranian border south of Khanaqin.The land is fertile