From the English Wikipedia page [1].
Inčukalns Municipality (Latvian: Inčukalna novads) is a municipality in Vidzeme, Latvia. The municipality was formed in 2006 by merging Inčukalns parish and Vangaži town the administrative centre being Inčukalns.
It hosts the Inčukalns Underground Gas Storage facility, which provides the Baltic States and parts of northwestern Russia with gas during the winter months.
The Latvian Wikipedia page is [2]