The Yuzhno-Russkoye gas field in Yamalo-Nenets Autonomous District of Tyumen. A major business of the district is oil and gas production, with one of the largest gas fields in the world The Yuzhno-Russkoye gas field and substantial prospects for further exploration. The Yuzhno-Russkoye gas field is designated to become the main natural gas supply for the Nord Stream pipeline. Pictured: gas pipeline ; `DO NOT OPEN!!! GAS`