A documentary on the Darjeeling Hill Railway by Nick Lera who's said with the advent of You Tube it's hard to sell DVD's now. So he's uploading his programs to YT and this is just one. Some are in German too.
The steam engines are used these days for tourist trains and new diesels are used for ordinary service trains. At one stage the whole journey cost the princely sum of 3p for an eight hour trip behind steam.