A dejected Ji-ho (Jung So-min) uses this flight of stairs to access this tunnel in the middle of the night and proceeds to walk through it alone in episode 2 of Because This Is My First Life/This Life Is Our First (이번 생은 처음이라) (tvN, 2017). This is after escaping from her temporary lodging when Director Gye (Kim Wook) drunkenly tries to force himself on her.
Jahamun Tunnel [자하문터널] is a functioning traffic tunnel located in the neighbourhood of Buam-dong [부암동], Seoul.
Address: Jahamun-ro, Buam-dong, Jongno-gu, Seoul
서울특별시 종로구 부암동 자하문로
Geolocation of tunnel stairs: 37.593405, 126.963747
Getting here: Gyeongbokgung station [경복궁역], Line 3, exit 3. Walk about 270m to the Gyeongbokgung station bus stop [경복궁역 정류장] and take buses 7212, 1021 and 7022 for 6 stops to the Buam-dong Residents Centre [부암동주민센터.무계원]. Follow the flow of the traffic on Changuimun-ro [창의문로], cross the road towards the 7-11, and then turn right.
Keep walking on and you will see a bus stop on the left for the Jongno 13 (종로13) village bus. Walk on and the tunnel and stairs will be on your right.
— submitted by Mich, picture by Mich (2014)