Zoltan Berki (pictured below) usually wakes up before dawn, as his five small children sleep next door, to feed the old iron furnace that stands in a wall cavity to warm up both rooms. This is the only part of his house that he can afford to heat during winter.
On Sunday, the elder Berki went to dig up leftover coal by hand - a common sight in winter.
The man-made mounds are littered with materials for burning, including logs from the old coal mine rail tracks which are infused with diesel.
"Smokes like hell but burns nicely," he said as he piled up a few. "We collect what we find and take it home to burn. They heat up nicely, and we can't afford to buy anything."
PHOTO EDITING MARIKA KOCHIASHVILI; TEXT EDITING MIKE COLLETT-WHITE; LAYOUT JULIA DALRYMPLE