More than 300 mud volcanoes and mud volcano manifestations are located in the oil and gas regions of Azerbaijan . Most of them are characterized by intense griffon-salsa activity and release KH gases, mineralized waters, and oil-emulsified silty mud to the surface of the earth. Usually, the eruption of a mud volcano begins with a loud underground roar and explosion. Gases coming from the deep layers of the earth to the surface are ignited. ^[ 2 ] Sometimes the height of the flame on the volcano reaches 1000 meters (Garasu volcano). Mud volcano gases consist mainly of methane, partly heavy hydrocarbons and inert gases. The water of the mud volcano is hydrogen carbonate-sodium with iodine, bromine, boron, etc., its mud contains many trace elements (boron, mercury, manganese, copper, barium, stroysium, lithium, etc.). Every year, from 2 to 5 paroxysms of eruptions occur in Azerbaijan, sometimes more. In different years of the last century, activation of mud volcano activity was recorded and the number of eruptions was more than usual. ^[ 3 ] Mud volcanoes are widespread in the Republic of Azerbaijan. In addition to mud volcanoes, their “pilpila”, “Yardag”, “bozdag”, “akhtarma”, “gaynaca”, etc. they also have local names. There are more than 220 mud volcanoes in the Republic of Azerbaijan (on the Absheron Peninsula, Gobustan, southeastern Shirvan plain, Samur-Devachi plain, Absheron and Baku archipelagos). The biggest ones are Galmas, Toragay , Beyuk Kenizdag , etc. Many cuts are cone-shaped. Its height is 20-400 m, the diameter of its base is 100-4500 m. ^[ 4 ] In 2007, “Mud Volcano Group of Baku and Absheron Peninsula State Nature Reserve” was created and 52 mud volcanoes were given the status of state nature reserve.