Central Asia–Center gas pipeline system
The Central Asia – Center gas pipeline system is a Gazprom controlled system of natural gas pipelines, which run from Turkmenistan via Uzbekistan and Kazakhstan to Russia. The eastern branch includes the Central Asia – Center (CAC) 1, 2, 4 and 5 pipelines, which start from the south-eastern gas fields of Turkmenistan.
Source: Wikipedia — Central Asia–Center gas pipeline system (CC BY-SA 4.0)