U.S , India , China , Russia
Which train service, covering 3,726 Km. between Jammu Tawi (Jammu & Kashmir) and Kanyakumari (Tamil Nadu), is the longest passenger train service in India ?
Which became the first railway in the world to be preserved by volunteers when it re-opened on May 14, 1951 with trains running between Wharf and Rhydyronen stations.