Analysis of information sources in references of the Wikipedia article "Standing cell" in English language version.
were ten tight spaces for holding prisoners, about 70 by 70 centimeters [two feet square] and two meters high with a tiny door at the bottom which one had to enter on one's knees […] vertical sections like closets where the prisoner had to remain standing in darkness for several days
were ten tight spaces for holding prisoners, about 70 by 70 centimeters [two feet square] and two meters high with a tiny door at the bottom which one had to enter on one's knees […] vertical sections like closets where the prisoner had to remain standing in darkness for several days