दौड़ती है हिमालय तट से सागर, हमसफ़र हर राह पर, हवाई जहाज़ों को त्याग कर, करो अक्सर, भारतीय रेल में सफर. - Arpit P

Ballast Cleaning Machine in operation at BPL. You can see at the left of the pic that the Tracks are higher up than the section to the right. As the machine slowly moves to the right, it is slowly lifting up the tracks pressed down by the repeated passage of trains.

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