We talk train journeys of all kinds with the guru of rail travel, Mark Smith, aka "The Man in Seat 61. "  Mark shares his own favourite journeys and experiences, particularly in the country where "the scenery inside the train is as enthralling as the landscape outside."  Mark's  hugely informative website is  at www.seat61.com.  Thanks as well to Monisha Rajesh, author of  "Around the World in 80 trains"