Jasenovac concentration camp
During breaks from work (from 5:00-6:00; 12:00-13:00, and 17:00-20:00), inmates were allowed to empty their bowels in public latrines.  These were big pits that lay bare in the open field, covered with planks of wood.  Inmates often fell inside and died. The Ustaše encouraged this by having prisoners separate the planks.  Sometimes, the Ustaše would even drown inmates inside the pits.  When it rained, these pits would overflow and drain into the lake.  This meant that urine and feces would mix into the water which the prisoners had to drink.