A slum area on the railway tracks near New Alipore Station, Kolkata, India. Many slum areas in Kolkata focus on an industry, like laundry here. Train activity is much less in Kolkata than in Mumbai. I don't think something like this could exist in Mumbai.
Photo ID: Brett-Cole-India-03817
Photo size: 17.9 Mpixels (51.2 MB uncompressed) - 5179x3453 pixels (17.3x11.5 in / 43.8x29.2 cm at 300 ppi)