Taehung concentration camp
North Korea
The Taehŭng concentration camp is a North Korean prison camp for political dissidents and those who have committed economic crimes. It is located in the Kŏmdŏk district (chigu) of Tanch'ŏn-si, South Hamgyong province in eastern North Korea. It has been reported that a number of North Korean nationals who have traveled to sporting events abroad have, on their return, been imprisoned for speaking about their experiences in other countries, particularly South Korea.
Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).