Amnesty International says new aerial photographs show new construction and development at two of North Korea's massive prison camps.
North Korea's Massive Prison Camps
![An aerial view of industrial areas of Camp 16 in North Korea in 2010 and 2012. (Amnesty International/DigitalGlobe)](https://gdb.voanews.com/7ADADA2E-3594-4E42-95D4-2DBB14612740_w1024_q10_s.jpg)
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An aerial view of industrial areas of Camp 16 in North Korea in 2010 and 2012. (Amnesty International/DigitalGlobe)