The K Line Northern Extension, formerly known as the Crenshaw Northern Extension, is a planned Los Angeles Metro Rail light rail extension connecting Expo/Crenshaw station to Hollywood/Highland station in Hollywood. The corridor is a fully underground, north–south route along mostly densely populated areas on the western side of the Los Angeles Basin; it would be operated as part of the K Line. Los Angeles Metro is prioritizing the project along with pressure from the West Hollywood residents. Construction is slated to start in 2041 and begin service by 2047, although local officials are attempting to accelerate this timeline using Enhanced Infrastructure Financing District (EIFD).