The Maliguda Tunnel of Odisha is the 4th Biggest broad-gauge railway tunnel in India after "Banihal – Quazigund Tunnel" which is in the state of Jammu & Kashmir. The tunnel is 13 km east of Jeypore, India, 27 km from Koraput. The tunnel on which the entire route of 430 km was built by Japan Engineers in between (1961–66) with Japanese collaboration for the supply of Iron Ore from Kirandul to Vizag Port via- Dantewara, Jagdalpur, Jeypore, Koraput, Padua, Araku, Kottavalasa. References Railway tunnels in India Rail transport in Odisha Buildings and structures in Odisha 1966 establishments in Orissa Tunnels completed in 1966