Greater Caucasus Greater Caucasus Greater Caucasus (, Бөјүк Гафгаз, بيوک قافقاز; , "Didi K’avk’asioni"; , "Bolshoy Kavkaz", sometimes translated as "Caucasus Major", "Big Caucasus" or "Large Caucasus") is the major mountain range of the Caucasus Mountains. The range stretches for about from west-northwest to east-southeast, between the Taman Peninsula of the Black Sea to the Absheron Peninsula of the Caspian Sea: from the Western Caucasus in the vicinity of Sochi on the northeastern shore of the Black Sea and reaching nearly to Baku on the Caspian. The range is traditionally separated into three parts: In the wetter Western Caucasus, the mountains are
Caspian Sea around 4 million bbl/day. Additionally, Iran has an estimated 988.4 trillion cubic feet of natural gas, around 16 percent of total world reserves, which makes it to play a key role in the global energy security equation. Russia's economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russia's extensive mineral and energy resources are the largest such reserves in the world, making it second leading producers of oil and natural gas globally. The Caspian Sea region presently is a significant, but not major, supplier of crude oil to world markets, based