Maliguda Tunnel
The Maliguda Tunnel of Odisha is the 2nd Biggest broad-gauge railway tunnel in India after "Banihal - Quazigund Tunnel" which is in the state of Jammu & Kashmir. [1]
The tunnel is 13 km east of Jeypore, India, 27 km from Koraput.[2] 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.
Note: the Fenghuoshan tunnel finished in 2002 in Tibet is the highest railway tunnel in the world.