Klara Mauerova, 31 - a member of a sinister religious cult and her sister Katerina led the sickening torture of her eight-year-old son Ondrej and his ten year-old brother Jakub.
A court in Brno in Czech Republic heard how relatives partially skinned Ondrej and forced him to eat his own flesh.
The judge also jailed Katerina, 35, for ten years for her role in the sickening abuse.
The two boys had told judges how their mother and relatives had stubbed cigarettes out on their bare skin, whipped them with belts, and tried to drown them. They were also sexually abused and forced to cut themselves with knives.
The terrified youngsters said they were kept in cages or handcuffed to tables and made to stand in their own urine for days. More + pictures...