The mere mention of the Farakka Express, which jerks its way eastward each day from Delhi to Calcutta, is enough to throw even a seasoned traveller into fits of apoplexy. At a desert encampment on Namibia's Skeleton Coast, a hard-bitten adventurer had downed a peg of local fire-water then told me the tale. Farakka was a ghost train, he said, haunted by ghouls, Thuggees, and thieves. Only a passenger with a death wish would go anywhere near it.