The Circular Railway comes a full circle at Dum Dum Jn. This is the station that comes next to Bidhannagar Road. The station acts as the Interchange point with North-South Metro Corridor which shares the same station complex. Different suburban lines linking different destinations branch out from here connecting places like NSC Bose International Airport (line recently discontinued for Metro construction), Barasat , Bongaon, Hasnabad Dankuni, Barrackpore, Naihati, Bandel, Bardhaman, Ranaghat, Krishnanagar City, Murshidabad, Lalgola, etc. The Circular Railway journey also embarks from here as the lines towards Kolkata Station via Patipukur also branches out from here.