In 1870, His Highness the Maharajah of Indore, Sawai Tukojirao Holkar the Second, offered a loan of £10 million sterling for the construction of a railway line to his capital city of Indore. A quick survey was made and Khandwa on the Great Indian Peninsula Railway main line line was chosen as the junction point. The alignment was to pass through Sanawad and Kheree Ghat on the Narmada and then by way of the Choral Valley up the slopes of the Vindhayas to Indore. The section between Patalpani and Kalakund runs along the Choral river and with it’s numerous bridges, viaducts and tunnels, forms a fascinating backdrop in which to view the operations of this one hundred and fifty years old railway line.