The Serpukhovsko-Timiryazevskaya Line is a line of the Moscow Metro, designated by the color dark blue on maps. It connects the southern district of Serpukhovskaya to the northern area of Timiryazevskaya, covering a distance of approximately 30 kilometers. The line features 22 stations and serves as a vital transportation route for commuters in Moscow. Opened in stages between 1983 and 1991, the line is known for its deep-level construction, with many stations located underground. It plays a crucial role in connecting various neighborhoods and facilitating access to key areas, including Savyolovskaya and Khimki.