Seoripul Tunnel

Seoripul Tunnel runs 1,280 meters beneath Seoripul Park between Seocho Station and Naebang Station in Seoul, with six to eight lanes in each direction. It includes a 2.4-meter-wide combined bicycle and pedestrian path separated from the roadway, along with transparent soundproof walls. The tunnel opened on April 22, 2019, cutting travel time between the two stations from 25 minutes to around 5 minutes. It connects Seocho-daero, which had been blocked for 40 years by the grounds of the Defense Intelligence Command.