Among the 300 North Koreans who testified about regime abuses was Kim Kwang-Il, a 48-year-old defector who spent almost three years in a North Korean gulag for smuggling pine nuts across the border. After escaping to South Korea, Kim published a book about his experiences that included professional illustrations of the crimes he witnessed. The drawings provide a rare look into a vast constellation of prisons and concentration camps in which more than 200,000 North Koreans languish, according to Amnesty International.
The images are taken from this United Nations report.