Rovos calls itself the "Pride of Africa," and the boast is built into the timetable. Where a modern express would sprint, the Rovos train ambles, because the point is the looking. Restored wood-panelled coaches, originally built for the National Railways of Zimbabwe, carry no more than a few dozen guests behind two lounges and two dining cars. There are no televisions in the compartments and, by long-standing house rule, mobile phones stay out of the public spaces. Passengers dress for dinner. Through the windows, the landscape unspools: Karoo scrubland, the lion-coloured grass of the highveld, escarpments dropping toward distant rivers. The experience is less transport than a moving country house, where the scenery does the entertaining.

The accommodation comes in three sizes, and even the smallest is generous by the standards of any railway. A Pullman suite folds out to roughly seven square metres; a Deluxe suite occupies more. The Royal Suite is the showpiece, taking up fully half a carriage at about sixteen square metres, with its own lounge and a Victorian-style bathtub set beside a picture window. Every compartment, from the modest to the palatial, has a private bathroom with shower, basin, and toilet. Hot water and crisp linen reach the most remote corners of the route, hundreds of kilometres from the nearest town. It is the contrast that lands hardest: a deep soak in a claw-foot tub while the wilderness of Southern Africa slides past the glass.

Behind the polished brass sits a quieter rescue operation. Rovos owns seven steam locomotives, and several were pulled back from the brink of the cutting torch. Three Class 19D engines, built in Germany in the 1930s and named Brenda, Bianca, and Shaun after Vos's children, were bought from scrap-metal dealers, painstakingly rebuilt, and returned to steam in 1989. The oldest locomotive in the fleet, a Class 6 christened 439 Tiffany after his youngest daughter, was constructed by Dübs & Company of Glasgow in 1893. The naming runs deep into the family: one engine honours Vos's mother, another his wife, and one carries the name King Zog, after a beloved Dalmatian. In the company's Capital Park depot, a workforce that has grown to more than four hundred keeps these machines, and the carriages they haul, alive.

Luxury and risk share the same rails, and on 21 April 2010 the railway suffered its darkest hour. During a locomotive changeover at Centurion station, south of Pretoria, nineteen uncoupled carriages began to roll free, gathering speed with no engine to hold them. They ran back toward Pretoria station and crashed. Three people were killed and several passengers injured; roughly half of the train's fifty-five guests were aboard, along with members of the crew. The accident remains a sober counterpoint to the romance of the journey, a reminder that even the gentlest-seeming travel moves real weight at real speed. Rovos resumed operations, and the train continues to draw travellers from around the world, but the day is not forgotten.

From its Pretoria base, the Rovos network reaches astonishingly far. The classic three-night run descends to Cape Town; another climbs north to Victoria Falls, crossing the Zimbabwean border to one of the great waterfalls of the world. The most ambitious itineraries stretch over two weeks and thousands of kilometres, threading through Namibia to the Atlantic coast at Walvis Bay, or running clear across the continent to Dar es Salaam on the Tanzanian shore of the Indian Ocean. On some of these journeys the train rolls onto the storied TAZARA line, picking its way over river gorges in the African bush. Few forms of travel cover so much ground while asking the traveller to slow down so completely.