An NGO monitoring North Korean human rights has teamed up with commercial intelligence company in an effort to keep information on a notorious prison camp up to date.

AllSource Analysis (ASA) and the Committee for Human Rights in North Korea (HRNK) released a joint analytical report on Thursday detailing the current status of the North’s Camp No. 25. The report covered activity observed over the past 12 months using satellite imagery from Airbus Defense and Space.