The couple on the platform are travellers from Chile who found Indonesia was challenging them. Yes, independent travel here takes you to the limits of endurance!
As the train passes the smaller stations two members of staff in full uniform stand to attention as it passes.
The line spanned several long and deep river valleys and gullies with the train perched on concrete piers without any superstructure above the line.
First class rail is used by a small minority considering the size of the population while the more affordable services seem to travel overnight and take ages.