In a significant development, construction activities started in tunnel 7, measuring about 6,610 metre, which will be the longest in the Dimapur-Kohima new rail line project. The new rail line project is located in Tsiepama village of Medziphema circle of Dimapur district in Nagaland. The tunnel is located between Pherima and Piphema stations of this project.The 82.50 km long (2.75 km in Assam and 79.75 km in Nagaland) Dimapur - Kohima new railway line project which takes off from the Dhansiri station of Assam to Zubza adjacent to Kohima is being constructed at an anticipated cost of `66.63 billion. The project includes 27 major bridges, 148 minor bridges, 5 road over bridges, 15 road under bridges and 21 tunnels of 31 km length. The 16.5 km section from Dhansiri to Shokhuvi was already commissioned in October 2021. A 12 km long approach road was constructed through the hills to reach Portal 1 of Tunnel no 7 in Tsiepama village. The project has eight new stations viz Dhansiri, Dhansiripar, Shokhuvi, Molvom, Pherima, Piphema, Menguzuma and Zubza.