Longest tunnel on Indian Railway is
a) Kharbude tunnel on Konkan Railway*
b) Near Lonavala between Monkey hill and Khandala station
c) Kalka Shimla
d) Darjeeling hill Railway
a) Kharbude tunnel on Konkan Railway*
b) Near Lonavala between Monkey hill and Khandala station
c) Kalka Shimla
d) Darjeeling hill Railway