News Nation brings a special show ‘Rahasya’ throwing light on most mysterious facts in the world. We touch upon all the aspects of unresolved real mysteries. In today’s episode, we discuss popular railway line Kalka-Shimla railway Project which was started 160 years ago. British had taken support of Baba Bhalku’s divine power to build tunnel no 33. The British government also made a museum dedicating his contribution. Watch the mysterious story.