mohammed riaz and his wife naseem have been making bricks since they were children, each up to a thousand a day, every day, until they're physically exhausted. >> with our four children all i can manage right now are two to three hundred bricks. that's not enough to live on. reporter their children's future : is already mapped out. >> our children have to go out collecting clay from as early an age as possible instead of going to school. it's the only option. reporter once their quota has : been reached, which often means twelve hours' solid work, they go home. a tiny yard and a one-room cell, with a crumbling roof and walls. they eat what they can afford with the pittance they earn -- the equivalent of eight euros a day. half of it is deducted immediately to repay their debts. >> two of my children were taken ill and i had to have a doctor come. they died anyway, and i had to borrow money to pay for their burial. what am i going to pay it back with? reporter: and escaping to build up a new life elsewhere is simply not possible. brick-making is the only job they have ever had. those who d