Malang is a town located at the mountains to the south of Surabaya. It's squeezed between mountains and volcanoes! It used to be a nice and cool place, although nowaday it's hot and crowded, due to severe pollution.
The railway traffic is mostly dominated by passengers train. And diesel-hydraulic locomotives once dominated Malang's railway traffic, as huge tractive effort is needed in the mountain. Although super powerful diesel-electric locomotives (like GE CC203/U20C) gradually replacing them.
At the moment, I only have two pictures of Malang area. I might expand this gallery, if anyone could gave me some assistance.
And just for the note, the railway line around Malang are occasionally disturbed by volcanic activites around Malang.
The line between Malang and Bitar was once broken off, when the nearby railway bridge was washed away by lava flows in 1989 Mt. Kelud Eruption.
At the moment, the nearby Mount Semeru began to show some activity. So, there is a chance that some bridges would likely to be awashed by lava flows.