Länsimetro is a partially introduced extension of the Helsinki area metro from Helsinki to Southern Espoo. The first phase, introduced in November 2017, comprises an extension of the metro line westward to Matinkylä metro station. There are eight stations on the less than 14 km section of track.
In the second stage of Länsimetro project, the metro will be extended from Matinkylä to Kivenlahti. The entire project comprises seven kilometers of new railway line and five new stations (Finnoo, Kaitaa, Soukka, Espoonlahti and Kivenlahti). In addition, an underground metro depot will be built in Sammalvuori.