Everyone who lands in Bangalore by air will most likely speed down a six-lane expressway to the city, passing by suburban towns where the pace of growth has been frenetic over the past decade. That growth, of course, came with the city’s new airport at Devanahalli in 2008. But rewind back a hundred years -- that same trip into Bangalore from Devanahalli via open country would have been on a narrow-gauge railway line that was then brand new. The old station buildings on that line still exist and, last month, the South Western Railway and heritage enthusiasts embarked on a restoration and preservation project to give them a new lease of life.