25 year old, Sarfaraz Ansari outside his house in the village of Bokapahari. Cracks in the walls caused by the heat from fires that burn underground have forced his family to abandon the house. Coal fires rage just below the surface of the ground, making it too hot to walk with naked feet, noxious gases spew up from fissures, making the environment toxic. Residents who live above the furnace make $2 a day collecting small chunks of coal they sell to illegal middlemen. One or two houses collapse annually into vast underground caverns left unfilled by abandoned mining operations.